Due to the traditional feeding vibrator of color sorter could not effectively solve the problem of non-linear variation of vibration and cannot synchronizing command signal and control signal caused by voltage fluctuation of power grid, a method for vibration control of feeding vibrator of color sorter based on FPGA is proposed. This method is based on Verilog HDL language and multiple submodules. The PWM parameter is configured to realize the thyristor turn-on delay design and realize synchronous adjustment of vibration volume. Simulation and waveform detection show that this method can effectively synchronize the control signal with the sending instruction; through the filed vibration tests shows that this method can realize linear vibration acceleration with the vibration magnitude of the input value change, under no-load condition, the linear fitting degree reaches to 0.95, under the feeding condition and large vibration input, the linear fitting degree can reach to 0.99.