Multi-wavelength laser therapeutic instrument control system

The invention discloses a multi-wavelength laser therapeutic instrument control system which comprises a master microcontroller MPU1, a slave microcontroller MPU2, a digital-to-analog converter D/A, a constant-current driving module, an electronic switch and a multi-wavelength laser. The main microcontroller MPU1 is connected with the digital-to-analog converter D/A through a digital signal line, the digital-to-analog converter D/A is connected with the constant-current driving module through a signal line, the constant-current driving module is connected with the electronic switch, and the electronic switch is connected with the multi-wavelength laser; the digital-to-analog converter D/A comprises at least two paths of digital-to-analog conversion chips; the at least two paths of digital-to-analog conversion chips output at least two paths of analog signals to be connected with the at least two paths of constant-current driving modules; and the at least two paths of constant current driving modules are conne