diff --git a/docs/generated/core_configuration.html b/docs/generated/core_configuration.html
index ac5730017523..09db240dfda1 100644
--- a/docs/generated/core_configuration.html
+++ b/docs/generated/core_configuration.html
@@ -738,7 +738,7 @@
             <td><h5>file.block-size</h5></td>
             <td style="word-wrap: break-word;">(none)</td>
             <td>MemorySize</td>
-            <td>File block size of format, default value of orc stripe is 64 MB, and parquet row group is 128 MB.</td>
+            <td>File block size of format, default value of orc stripe is 64 MB, parquet row group is 128 MB, and avro block is 64000 bytes. For avro, this is the uncompressed block size threshold.</td>
         </tr>
         <tr>
             <td><h5>file.compression</h5></td>
diff --git a/paimon-api/src/main/java/org/apache/paimon/CoreOptions.java b/paimon-api/src/main/java/org/apache/paimon/CoreOptions.java
index 7b0665c50296..66d917314d97 100644
--- a/paimon-api/src/main/java/org/apache/paimon/CoreOptions.java
+++ b/paimon-api/src/main/java/org/apache/paimon/CoreOptions.java
@@ -426,7 +426,8 @@ public InlineElement getDescription() {
                     .memoryType()
                     .noDefaultValue()
                     .withDescription(
-                            "File block size of format, default value of orc stripe is 64 MB, and parquet row group is 128 MB.");
+                            "File block size of format, default value of orc stripe is 64 MB, parquet row group is 128 MB, "
+                                    + "and avro block is 64000 bytes. For avro, this is the uncompressed block size threshold.");
 
     public static final ConfigOption<MemorySize> FILE_INDEX_IN_MANIFEST_THRESHOLD =
             key("file-index.in-manifest-threshold")
diff --git a/paimon-format/src/main/java/org/apache/paimon/format/avro/AvroFileFormat.java b/paimon-format/src/main/java/org/apache/paimon/format/avro/AvroFileFormat.java
index 69512d5ee7cf..a23c66af2181 100644
--- a/paimon-format/src/main/java/org/apache/paimon/format/avro/AvroFileFormat.java
+++ b/paimon-format/src/main/java/org/apache/paimon/format/avro/AvroFileFormat.java
@@ -29,6 +29,7 @@
 import org.apache.paimon.fs.PositionOutputStream;
 import org.apache.paimon.options.ConfigOption;
 import org.apache.paimon.options.ConfigOptions;
+import org.apache.paimon.options.MemorySize;
 import org.apache.paimon.options.Options;
 import org.apache.paimon.predicate.Predicate;
 import org.apache.paimon.statistics.SimpleColStatsCollector;
@@ -65,12 +66,14 @@ public class AvroFileFormat extends FileFormat {
 
     private final Options options;
     private final int zstdLevel;
+    @Nullable private final MemorySize blockSize;
 
     public AvroFileFormat(FormatContext context) {
         super(IDENTIFIER);
 
         this.options = getIdentifierPrefixOptions(context.options());
         this.zstdLevel = context.zstdLevel();
+        this.blockSize = context.blockSize();
     }
 
     @Override
@@ -93,6 +96,9 @@ public AvroBlockWriter createBlockWriter(
         AvroRowDatumWriter datumWriter = new AvroRowDatumWriter(rowType);
         DataFileWriter<InternalRow> writer = new DataFileWriter<>(datumWriter);
         writer.setCodec(createCodecFactory(compression));
+        if (blockSize != null) {
+            writer.setSyncInterval(Math.toIntExact(blockSize.getBytes()));
+        }
         writer.setFlushOnEveryBlock(false);
         writer.create(schema, new CloseShieldOutputStream(out));
         return new AvroBlockWriter(writer, out, schema);
diff --git a/paimon-format/src/test/java/org/apache/paimon/format/avro/AvroFileFormatTest.java b/paimon-format/src/test/java/org/apache/paimon/format/avro/AvroFileFormatTest.java
index 89605046b104..a13bd2a0c258 100644
--- a/paimon-format/src/test/java/org/apache/paimon/format/avro/AvroFileFormatTest.java
+++ b/paimon-format/src/test/java/org/apache/paimon/format/avro/AvroFileFormatTest.java
@@ -48,6 +48,9 @@
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.io.TempDir;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.CsvSource;
+import org.junit.jupiter.params.provider.ValueSource;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -76,6 +79,74 @@ public static void before() {
         fileFormat = new AvroFileFormat(new FormatContext(new Options(), 1024, 1024));
     }
 
+    @ParameterizedTest
+    @CsvSource({
+        ", 64000, null",
+        ", 64000, deflate",
+        "1 kb, 1024, null",
+        "1 kb, 1024, deflate",
+        "4 kb, 4096, null",
+        "4 kb, 4096, deflate",
+        "128 kb, 131072, null",
+        "128 kb, 131072, deflate"
+    })
+    void testFileBlockSize(String blockSize, int expectedBlockSize, String compression)
+            throws IOException {
+        Options options = new Options();
+        if (blockSize != null) {
+            options.setString("file.block-size", blockSize);
+        }
+        FileFormat format = FileFormat.fromIdentifier("avro", options);
+        RowType rowType = DataTypes.ROW(DataTypes.INT().notNull()).notNull();
+        LocalFileIO fileIO = LocalFileIO.create();
+        Path file = new Path(new Path(tempPath.toUri()), UUID.randomUUID().toString());
+        int numRecords = 300_000;
+
+        try (PositionOutputStream out = fileIO.newOutputStream(file, false);
+                FormatWriter writer =
+                        format.createWriterFactory(rowType).create(out, compression)) {
+            // Each record is encoded as one byte, so record counts also give uncompressed sizes.
+            for (int i = 0; i < numRecords; i++) {
+                writer.addElement(GenericRow.of(0));
+            }
+        }
+
+        long records = 0;
+        try (AvroBlockReader reader = new AvroBlockReader(fileIO.newInputStream(file))) {
+            while (reader.hasNextBlock()) {
+                AvroRawBlock block = reader.nextBorrowedRawBlock();
+                long expectedRecords = Math.min(expectedBlockSize, numRecords - records);
+                assertThat(block.recordCount()).isEqualTo(expectedRecords);
+                assertThat(block.decompress(null).remaining()).isEqualTo((int) expectedRecords);
+                records += block.recordCount();
+            }
+        }
+        assertThat(records).isEqualTo(numRecords);
+    }
+
+    @ParameterizedTest
+    @ValueSource(longs = {2147483648L, 4294968320L, Long.MAX_VALUE})
+    void testFileBlockSizeOverflow(long blockSize) throws IOException {
+        Options options = new Options();
+        options.setString("file.block-size", Long.toString(blockSize));
+        FileFormat format = FileFormat.fromIdentifier("avro", options);
+        RowType rowType = DataTypes.ROW(DataTypes.INT().notNull()).notNull();
+        LocalFileIO fileIO = LocalFileIO.create();
+        Path file = new Path(new Path(tempPath.toUri()), UUID.randomUUID().toString());
+
+        try (PositionOutputStream out = fileIO.newOutputStream(file, false)) {
+            assertThatThrownBy(
+                            () -> {
+                                try (FormatWriter writer =
+                                        format.createWriterFactory(rowType).create(out, "null")) {
+                                    writer.addElement(GenericRow.of(0));
+                                }
+                            })
+                    .isInstanceOf(ArithmeticException.class)
+                    .hasMessage("integer overflow");
+        }
+    }
+
     @Test
     public void testSupportedDataTypes() {
         ArrayList<DataField> dataFields = new ArrayList<>();