diff --git a/process/js_childprocess.cpp b/process/js_childprocess.cpp
index 9403527..f76197a 100644
--- a/process/js_childprocess.cpp
+++ b/process/js_childprocess.cpp
@@ -228,7 +228,7 @@ namespace OHOS::Js_sys_module::Process {
         stdErrInfo_->isNeedRun = &isNeedRun_;
         stdErrInfo_->fd = stdErrFd_[0];
         stdErrInfo_->pid = optionsInfo_->pid;
-        stdErrInfo_->maxBuffSize = static_cast<size_t>(optionsInfo_->maxBuffer);
+        stdErrInfo_->maxBuffSize = optionsInfo_->maxBuffer;
         napi_create_string_utf8(env_, "ReadStdErr", NAPI_AUTO_LENGTH, &resourceName);
         napi_create_async_work(env_, nullptr, resourceName, ReadStdErr, EndStdErr,
                                reinterpret_cast<void*>(stdErrInfo_), &stdErrInfo_->worker);
@@ -243,8 +243,8 @@ namespace OHOS::Js_sys_module::Process {
             return;
         }
         while (*(stdOutInfo->isNeedRun)) {
-            read(stdOutInfo->fd, childStdout, sizeof(childStdout) - 1);
-            if (strlen(childStdout) > 0) {
+            auto readSize = read(stdOutInfo->fd, childStdout, sizeof(childStdout) - 1);
+            if (readSize >= 0) {
                 stdOutInfo->stdData += childStdout;
             }
             if (stdOutInfo->stdData.size() > stdOutInfo->maxBuffSize && *(stdOutInfo->isNeedRun)) {
@@ -277,8 +277,8 @@ namespace OHOS::Js_sys_module::Process {
             return;
         }
         while (*(stdErrInfo->isNeedRun)) {
-            read(stdErrInfo->fd, childStderr, sizeof(childStderr) - 1);
-            if (strlen(childStderr) > 0) {
+            auto readSize = read(stdErrInfo->fd, childStderr, sizeof(childStderr) - 1);
+            if (readSize >= 0) {
                 stdErrInfo->stdData += childStderr;
             }
             if (stdErrInfo->stdData.size() > stdErrInfo->maxBuffSize && *(stdErrInfo->isNeedRun)) {
diff --git a/process/js_childprocess.h b/process/js_childprocess.h
index fa9c7b9..afc1ce5 100644
--- a/process/js_childprocess.h
+++ b/process/js_childprocess.h
@@ -34,7 +34,7 @@ namespace OHOS::Js_sys_module::Process {
         napi_value promise = nullptr;
         std::string stdData = "";
         bool *isNeedRun = nullptr;
-        size_t maxBuffSize;
+        int64_t maxBuffSize;
         int fd = 0;
         int pid = 0;
     };
diff --git a/process/js_process.cpp b/process/js_process.cpp
index a44dc2d..62eb6bb 100644
--- a/process/js_process.cpp
+++ b/process/js_process.cpp
@@ -210,7 +210,7 @@ namespace OHOS::Js_sys_module::Process {
 
     void Process::Abort() const
     {
-        abort();
+        exit(0);
     }
 
     void Process::On(napi_value str, napi_value function)
@@ -250,10 +250,14 @@ namespace OHOS::Js_sys_module::Process {
         size_t bufferSize = 0;
         bool flag = false;
         NAPI_CALL(env_, napi_get_value_string_utf8(env_, str, buffer, 0, &bufferSize));
-        if (bufferSize > 0) {
-            buffer = new char[bufferSize + 1];
+        NAPI_ASSERT(env_, bufferSize > 0, "bufferSize == 0");
+        buffer = new char[bufferSize + 1];
+        if (memset_s(buffer, bufferSize + 1, 0, bufferSize + 1) != 0) {
+            HILOG_ERROR("buffer memset error");
+            delete []buffer;
+            return nullptr;
         }
-        NAPI_CALL(env_, napi_get_value_string_utf8(env_, str, buffer, bufferSize + 1, &bufferSize));
+        napi_get_value_string_utf8(env_, str, buffer, bufferSize + 1, &bufferSize);
         std::string temp = "";
         if (buffer != nullptr) {
             temp = buffer;
@@ -330,8 +334,9 @@ namespace OHOS::Js_sys_module::Process {
     napi_value Process::GetEnvironmentVar(napi_value name) const
     {
         char *buffer = nullptr;
-        char *envvar = nullptr;
         napi_value result = nullptr;
+        char buf[260 * NUM_OF_DATA] = { 0 }; // 260:Only numbers path String size is 260.
+        size_t length = sizeof(buf);
         size_t bufferSize = 0;
         napi_get_value_string_utf8(env_, name, buffer, 0, &bufferSize);
         if (bufferSize > 0) {
@@ -344,12 +349,12 @@ namespace OHOS::Js_sys_module::Process {
             delete []buffer;
             buffer = nullptr;
         }
-        envvar = getenv(temp.c_str());
-        if (envvar == nullptr) {
+        auto envNum = uv_os_getenv(temp.c_str(), buf, &length);
+        if (envNum == UV_ENOENT) {
             NAPI_CALL(env_, napi_get_undefined(env_, &result));
             return result;
         }
-        napi_create_string_utf8(env_, envvar, strlen(envvar), &result);
+        napi_create_string_utf8(env_, buf, strlen(buf), &result);
         return result;
     }