A plant lamp and a control system thereof for promoting plant growth, comprising: a main control module, and a light source module, a temperature control module, a power supply module and a heat dissipation module connected to the main control module； the light source in the light source module is composed of red, blue and white LEDs, and the LEDs of each color system are connected to each other. The three color LEDs of the light source can be individually adjusted or adjusted as a whole. This allows you to simulate different lighting. This can simulate different lighting. A user can provide optimal illumination to the plants by adjusting the intensity of the different color light-emitting circuits according to the needs of the plant growth, thereby further promoting the growth of the plants.
