In the development of traditional laser range finder,respective circuitry was made to implement functions such as power supply,temperature control,divergence angle control at transmitter and control,counter,interface at receiver,which made the circuit system and interface complex.In our application,we make laser range finder electronics by using a single device named TMS320F2812 and integrated functions such as range finder,temperature control and motor control etc.into this device.Furthermore,some arithmetic was added to extend the functions and improve the performance of laser range finder.