diff --git a/tools/acrn-crashlog/usercrash/Makefile b/tools/acrn-crashlog/usercrash/Makefile
index 2df1dc005..b4c75c443 100644
--- a/tools/acrn-crashlog/usercrash/Makefile
+++ b/tools/acrn-crashlog/usercrash/Makefile
@@ -1,4 +1,4 @@
-all: check_obj usercrash_s usercrash_c
+all: check_obj usercrash_s usercrash_c debugger
 
 CURRDIR := $(shell pwd)
 INCLUDE += -I $(CURRDIR)/include/
@@ -19,6 +19,14 @@ usercrash_c: $(BUILDDIR)/usercrash/obj/protocol.o \
 	$(BUILDDIR)/common/obj/strutils.o
 	$(CC) -g $(CFLAGS) $(INCLUDE) $^ -o $(BUILDDIR)/usercrash/bin/$@ -lsystemd
 
+debugger: $(BUILDDIR)/usercrash/obj/debugger.o \
+	$(BUILDDIR)/usercrash/obj/crash_dump.o \
+	$(BUILDDIR)/common/obj/log_sys.o \
+	$(BUILDDIR)/common/obj/cmdutils.o \
+	$(BUILDDIR)/common/obj/fsutils.o \
+	$(BUILDDIR)/common/obj/strutils.o
+	$(CC) -g $(CFLAGS) $(INCLUDE) $^ -o $(BUILDDIR)/usercrash/bin/$@ -lsystemd
+
 $(BUILDDIR)/usercrash/obj/%.o:%.c
 	$(CC) $(CFLAGS) $(INCLUDE) -o $@ -c $<
 
diff --git a/tools/acrn-crashlog/usercrash/debugger.c b/tools/acrn-crashlog/usercrash/debugger.c
new file mode 100644
index 000000000..d454dfe5f
--- /dev/null
+++ b/tools/acrn-crashlog/usercrash/debugger.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) <2018> Intel Corporation
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include "crash_dump.h"
+#include "log_sys.h"
+
+/**
+ * Debugger can work without server when uses "debugger pid" commands to
+ * debug the running process. This function will dump the process info on the
+ * screen, also you can relocate the info to a file.
+ */
+static void print_usage(void)
+{
+	printf("debugger - tool to dump process info of a running process. ");
+	printf("[Usage]\n");
+	printf("\t--shell cmd, debugger <pid>  (root role to run)\n");
+	printf("(root role to run)\n");
+	printf("[Option]\n");
+	printf("\t-h: print this usage message\n");
+	printf("\t-v: print debugger version\n");
+}
+
+int main(int argc, char *argv[])
+{
+	int pid;
+
+	if (argc > 1) {
+		if (strcmp(argv[1], "-v") == 0) {
+			printf("debugger version is 1.0\n");
+			return 0;
+		}
+		if (strcmp(argv[1], "-h") == 0) {
+			print_usage();
+			return 0;
+		}
+	} else
+		print_usage();
+
+	if (getuid() != 0) {
+		LOGE("failed to execute debugger, root is required\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if (argc == 2) {
+		/* it's from shell cmd */
+		pid = atoi(argv[1]);
+		crash_dump(pid, 0, STDOUT_FILENO);
+	} else {
+		print_usage();
+		return 0;
+	}
+
+	return 0;
+}