diff --git a/Gazebo_Distributed_MPI/mpi_run/MPI_Gazebo_launch.sh b/Gazebo_Distributed_MPI/mpi_run/MPI_Gazebo_launch.sh
index 3c4c3bc..951d8a2 100755
--- a/Gazebo_Distributed_MPI/mpi_run/MPI_Gazebo_launch.sh
+++ b/Gazebo_Distributed_MPI/mpi_run/MPI_Gazebo_launch.sh
@@ -12,6 +12,12 @@ workspace_path=$3
 world_file=$4
 host_file=$5
 
+echo $packdge_name
+echo $launch_file_name
+echo $workspace_path
+echo $world_file
+echo $host_file
+
 host_count=0
 hosts=()
 
@@ -45,7 +51,7 @@ done
 sleep 5s
 
 #登入第一个节点启动MPI的gzserver，并成为各自节点上的ROS node
-ssh -f -n ${hosts[0]} "cd ~/MPI;
+ssh -f -n ${hosts[0]} "cd ~/Git/Gazebo_Distributed_MPI/mpi_run;
 mpiexec -hostfile $host_file -np 1 mygzserver $world_file $workspace_path : -np 1 mygzserver $world_file $workspace_path;
 echo mpiexec_done!"
 echo "${hosts[0]}:mpiexec_good"
diff --git a/Gazebo_Distributed_MPI/mpi_run/hostfile b/Gazebo_Distributed_MPI/mpi_run/hostfile
index a9821ff..164812c 100644
--- a/Gazebo_Distributed_MPI/mpi_run/hostfile
+++ b/Gazebo_Distributed_MPI/mpi_run/hostfile
@@ -1,4 +1,4 @@
 anwen slots=1
-zhangshuai-ThinkPad-X250 slots=1
+airc02-PowerEdge-T640 slots=1
 
 
diff --git a/Gazebo_Distributed_MPI/mpi_run/命令例子 b/Gazebo_Distributed_MPI/mpi_run/命令例子
new file mode 100644
index 0000000..8dc1bf3
--- /dev/null
+++ b/Gazebo_Distributed_MPI/mpi_run/命令例子
@@ -0,0 +1 @@
+./MPI_Gazebo_launch.sh hector_quadrotor_gazebo hector_2_single_gazebo_mpi_spawn_test.launch ~/Git/Gazebo_Hector_Test ~/Git/Gazebo_Hector_Test/src/hector_quadrotor/hector_quadrotor_gazebo/worlds/kunming_airport_distribution_2hector_mpi_test.world hostfile