diff --git a/build/third_party_gn/musl/musl_template.gni b/build/third_party_gn/musl/musl_template.gni
index a3ceff55c049af3492b20e0edf62b7bbc519a735..23b6f190679a551f7bde3784b36bcd0699414e78 100644
--- a/build/third_party_gn/musl/musl_template.gni
+++ b/build/third_party_gn/musl/musl_template.gni
@@ -292,6 +292,8 @@ template("musl_libs") {
         "-march=armv8",
         "-DOHOS_LG_CHUNK_DEFAULT=19",  # For jemalloc 4.X
       ]
+    } else if (musl_arch == "riscv64") {
+      cflags += [ "-march=riscv64" ]
     } else if (musl_arch == "x86_64") {
       cflags += [ "-march=x86-64" ]
     }
diff --git a/build/toolchain/linux/BUILD.gn b/build/toolchain/linux/BUILD.gn
index 3906faa6c7e824bef8c527e3b4cba685f247a477..12a4f376c429c017d7404631467592437fb092f6 100755
--- a/build/toolchain/linux/BUILD.gn
+++ b/build/toolchain/linux/BUILD.gn
@@ -12,6 +12,15 @@
 # limitations under the License.
 
 import("$build_root/toolchain/gcc_toolchain.gni")
+clang_toolchain("clang_riscv64") {
+  toolchain_args = {
+    current_cpu = "riscv64"
+    current_os = "linux"
+  }
+  executable_extension = ""
+  shlib_extension = ".so"
+}
+
 clang_toolchain("clang_arm") {
   toolchain_args = {
     current_cpu = "arm"
@@ -30,6 +39,22 @@ clang_toolchain("clang_arm64") {
   shlib_extension = ".so"
 }
 
+gcc_toolchain("riscv64") {
+  toolprefix = "riscv64-linux-gnu-"
+
+  cc = "${toolprefix}gcc"
+  cxx = "${toolprefix}g++"
+
+  ar = "${toolprefix}ar"
+  ld = cxx
+
+  toolchain_args = {
+    current_cpu = "riscv64"
+    current_os = "linux"
+    is_clang = false
+  }
+}
+
 gcc_toolchain("arm64") {
   toolprefix = "aarch64-linux-gnu-"