The invention discloses an automatic inserting system for a sand stabilizing plate. The system comprises a plate feeding device, a plate conveying device, an inserting power device and an electric energy supply device. The plate feeding device, the plate conveying device and the inserting power device are all connected with the electric energy supply device, the plate feeding device is arranged onone side of the plate conveying device, and the inserting power device is arranged below the other side of the plate conveying device. The invention further discloses an automatic inserting method for the sand stabilizing plate. The sand stabilizing plate is moved to the plate conveying device through the plate feeding device, the sand stabilizing plate is conveyed into the inserting power devicethrough the plate conveying device, and then the sand stabilizing plate inserted into the sand through a first clamping plate and a second clamping plate of the inserting power device. When the system and the method are used for inserting the sand stabilizing plate into the sand, manual laying is not needed, the construction cost is reduced, full mechanical operation is achieved, the laying efficiency is high, the laying effect is good, and the sand stabilizing plate inserted into the sand is firmer.