diff --git a/avxintrin.h b/avxintrin.h
index 7ec9740..a683707 100644
--- a/avxintrin.h
+++ b/avxintrin.h
@@ -984,6 +984,13 @@ FORCE_INLINE __m256i _mm256_set1_epi8(int8_t a)
     return ret;
 }
 
+FORCE_INLINE __m256i _mm256_set1_epi16(int16_t a)
+{
+    __m256i ret;
+    ret.vect_s16[0] = ret.vect_s16[1] = vdupq_n_s16(a);
+    return ret;
+}
+
 FORCE_INLINE __m256i _mm256_set1_epi32(int32_t a)
 {
     __m256i ret;
diff --git a/data/avx2neontestdata.h b/data/avx2neontestdata.h
index 06502b9..11aca0c 100644
--- a/data/avx2neontestdata.h
+++ b/data/avx2neontestdata.h
@@ -2672,6 +2672,15 @@ static test_mm256_set1_epi8_data_model g_test_mm256_set1_epi8_data = {
      '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0', '0'},
 };
 
+typedef struct {
+    int16_t a;
+    int16_t expect[16];
+} test_mm256_set1_epi16_data_model;
+static test_mm256_set1_epi16_data_model g_test_mm256_set1_epi16_data = {
+    2019,
+    {2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019, 2019},
+};
+
 typedef struct {
     int32_t a;
     int32_t expect[8];
diff --git a/tests/a2ntest.c b/tests/a2ntest.c
index 3d34f96..74d00ba 100644
--- a/tests/a2ntest.c
+++ b/tests/a2ntest.c
@@ -1037,6 +1037,10 @@ const char *RunTest(InstructionTest test, int *flag)
             ret = "MM256_SET1_EPI8";
             *flag = test_mm256_set1_epi8();
             break;
+        case UT_MM256_SET1_EPI16:
+            ret = "MM256_SET1_EPI16";
+            *flag = test_mm256_set1_epi16();
+            break;
         case UT_MM256_SET1_EPI32:
             ret = "MM256_SET1_EPI32";
             *flag = test_mm256_set1_epi32();
@@ -4716,6 +4720,13 @@ int test_mm256_set1_epi8()
     return comp_return(g_test_mm256_set1_epi8_data.expect, &dst, sizeof(dst));
 }
 
+int test_mm256_set1_epi16()
+{
+    __m256i dst = _mm256_set1_epi16(g_test_mm256_set1_epi16_data.a);
+
+    return comp_return(g_test_mm256_set1_epi16_data.expect, &dst, sizeof(dst));
+}
+
 int test_mm256_set1_epi32()
 {
     __m256i dst = _mm256_set1_epi32(g_test_mm256_set1_epi32_data.a);
diff --git a/tests/a2ntest.h b/tests/a2ntest.h
index 6832314..b2863ab 100644
--- a/tests/a2ntest.h
+++ b/tests/a2ntest.h
@@ -197,6 +197,7 @@ typedef enum {
     UT_MM256_SET_M128I,
     UT_MM256_SET1_EPI64X,
     UT_MM256_SET1_EPI8,
+    UT_MM256_SET1_EPI16,
     UT_MM_SETZERO_SI128,
     UT_MM256_SETZERO_SI256,
     UT_MM512_SETZERO_SI512,
@@ -596,6 +597,7 @@ int test_mm_set1_ps(void);
 int test_mm_set1_epi64x(void);
 int test_mm_set1_pd(void);
 int test_mm256_set1_epi8(void);
+int test_mm256_set1_epi16(void);
 int test_mm256_set1_epi32(void);
 int test_mm256_set1_epi64x(void);
 int test_mm256_set1_pd(void);