diff --git a/target/loongarch/insns.decode b/target/loongarch/insns.decode
index e366cf7615..7491f295a5 100644
--- a/target/loongarch/insns.decode
+++ b/target/loongarch/insns.decode
@@ -1571,6 +1571,15 @@ xvsat_hu         0111 01110010 10000 1 .... ..... .....   @vv_ui4
 xvsat_wu         0111 01110010 10001 ..... ..... .....    @vv_ui5
 xvsat_du         0111 01110010 1001 ...... ..... .....    @vv_ui6
 
+xvexth_h_b       0111 01101001 11101 11000 ..... .....    @vv
+xvexth_w_h       0111 01101001 11101 11001 ..... .....    @vv
+xvexth_d_w       0111 01101001 11101 11010 ..... .....    @vv
+xvexth_q_d       0111 01101001 11101 11011 ..... .....    @vv
+xvexth_hu_bu     0111 01101001 11101 11100 ..... .....    @vv
+xvexth_wu_hu     0111 01101001 11101 11101 ..... .....    @vv
+xvexth_du_wu     0111 01101001 11101 11110 ..... .....    @vv
+xvexth_qu_du     0111 01101001 11101 11111 ..... .....    @vv
+
 xvreplgr2vr_b    0111 01101001 11110 00000 ..... .....    @vr
 xvreplgr2vr_h    0111 01101001 11110 00001 ..... .....    @vr
 xvreplgr2vr_w    0111 01101001 11110 00010 ..... .....    @vr
diff --git a/target/loongarch/disas.c b/target/loongarch/disas.c
index 09e5981fc3..6ca545956d 100644
--- a/target/loongarch/disas.c
+++ b/target/loongarch/disas.c
@@ -1988,6 +1988,15 @@ INSN_LASX(xvsat_hu,          vv_i)
 INSN_LASX(xvsat_wu,          vv_i)
 INSN_LASX(xvsat_du,          vv_i)
 
+INSN_LASX(xvexth_h_b,        vv)
+INSN_LASX(xvexth_w_h,        vv)
+INSN_LASX(xvexth_d_w,        vv)
+INSN_LASX(xvexth_q_d,        vv)
+INSN_LASX(xvexth_hu_bu,      vv)
+INSN_LASX(xvexth_wu_hu,      vv)
+INSN_LASX(xvexth_du_wu,      vv)
+INSN_LASX(xvexth_qu_du,      vv)
+
 INSN_LASX(xvreplgr2vr_b,     vr)
 INSN_LASX(xvreplgr2vr_h,     vr)
 INSN_LASX(xvreplgr2vr_w,     vr)
diff --git a/target/loongarch/vec_helper.c b/target/loongarch/vec_helper.c
index 44daf5ee9a..51cc8c4526 100644
--- a/target/loongarch/vec_helper.c
+++ b/target/loongarch/vec_helper.c
@@ -691,32 +691,44 @@ VSAT_U(vsat_hu, 16, UH)
 VSAT_U(vsat_wu, 32, UW)
 VSAT_U(vsat_du, 64, UD)
 
-#define VEXTH(NAME, BIT, E1, E2)                     \
-void HELPER(NAME)(void *vd, void *vj, uint32_t desc) \
-{                                                    \
-    int i;                                           \
-    VReg *Vd = (VReg *)vd;                           \
-    VReg *Vj = (VReg *)vj;                           \
-                                                     \
-    for (i = 0; i < LSX_LEN/BIT; i++) {              \
-        Vd->E1(i) = Vj->E2(i + LSX_LEN/BIT);         \
-    }                                                \
+#define VEXTH(NAME, BIT, E1, E2)                                 \
+void HELPER(NAME)(void *vd, void *vj, uint32_t desc)             \
+{                                                                \
+    int i, j, ofs;                                               \
+    VReg *Vd = (VReg *)vd;                                       \
+    VReg *Vj = (VReg *)vj;                                       \
+    int oprsz = simd_oprsz(desc);                                \
+                                                                 \
+    ofs = LSX_LEN / BIT;                                         \
+    for (i = 0; i < oprsz / 16; i++) {                           \
+        for (j = 0; j < ofs; j++) {                              \
+            Vd->E1(j + i * ofs) = Vj->E2(j + ofs + ofs * 2 * i); \
+        }                                                        \
+    }                                                            \
 }
 
 void HELPER(vexth_q_d)(void *vd, void *vj, uint32_t desc)
 {
+    int i;
     VReg *Vd = (VReg *)vd;
     VReg *Vj = (VReg *)vj;
+    int oprsz = simd_oprsz(desc);
 
-    Vd->Q(0) = int128_makes64(Vj->D(1));
+    for (i = 0; i < oprsz / 16; i++) {
+        Vd->Q(i) = int128_makes64(Vj->D(2 * i + 1));
+    }
 }
 
 void HELPER(vexth_qu_du)(void *vd, void *vj, uint32_t desc)
 {
+    int i;
     VReg *Vd = (VReg *)vd;
     VReg *Vj = (VReg *)vj;
+    int oprsz = simd_oprsz(desc);
 
-    Vd->Q(0) = int128_make64((uint64_t)Vj->D(1));
+    for (i = 0; i < oprsz / 16; i++) {
+        Vd->Q(i) = int128_make64(Vj->UD(2 * i + 1));
+    }
 }
 
 VEXTH(vexth_h_b, 16, H, B)
diff --git a/target/loongarch/insn_trans/trans_lasx.c.inc b/target/loongarch/insn_trans/trans_lasx.c.inc
index 093cf2a1fa..3fb86d9a92 100644
--- a/target/loongarch/insn_trans/trans_lasx.c.inc
+++ b/target/loongarch/insn_trans/trans_lasx.c.inc
@@ -317,6 +317,15 @@ TRANS(xvsat_hu, LASX, gvec_vv_i, 32, MO_16, do_vsat_u)
 TRANS(xvsat_wu, LASX, gvec_vv_i, 32, MO_32, do_vsat_u)
 TRANS(xvsat_du, LASX, gvec_vv_i, 32, MO_64, do_vsat_u)
 
+TRANS(xvexth_h_b, LASX, gen_vv, 32, gen_helper_vexth_h_b)
+TRANS(xvexth_w_h, LASX, gen_vv, 32, gen_helper_vexth_w_h)
+TRANS(xvexth_d_w, LASX, gen_vv, 32, gen_helper_vexth_d_w)
+TRANS(xvexth_q_d, LASX, gen_vv, 32, gen_helper_vexth_q_d)
+TRANS(xvexth_hu_bu, LASX, gen_vv, 32, gen_helper_vexth_hu_bu)
+TRANS(xvexth_wu_hu, LASX, gen_vv, 32, gen_helper_vexth_wu_hu)
+TRANS(xvexth_du_wu, LASX, gen_vv, 32, gen_helper_vexth_du_wu)
+TRANS(xvexth_qu_du, LASX, gen_vv, 32, gen_helper_vexth_qu_du)
+
 TRANS(xvreplgr2vr_b, LASX, gvec_dup, 32, MO_8)
 TRANS(xvreplgr2vr_h, LASX, gvec_dup, 32, MO_16)
 TRANS(xvreplgr2vr_w, LASX, gvec_dup, 32, MO_32)
