Thank you for your reply.
My application like that,for example ,i have 100 bytes data send from" STM32 A" to "STM32 B" .
In this process,the jn5169(A) get the data from serial port and send to another jn5169(B) through the zigbee wireless. the jn5169(B) send the received data to the STM32 B through serial port at once when get the data from jn5169(A);

i have saw the zigbee cluster library user guide, but i can't find a suitable cluster to do it;
waiting for your reply,thank you!