The invention relates to a power supply planning method based on renewable energy policy control constraints. A power supply planning model is built according to the number of green certificate transactions and the number of carbon transactions in renewable energy policy control constraint conditions as well as the spare capacity constraint, the maximum installed capacity constraint of to-be-built units, the earliest put-to-use year constraint, the system demand constraint and the generator set maximum and minimum output constraint in power planning constraint conditions, in order to maximize the net profit of a system in the planning period. The net profit is calculated based on the power profit of a power system, the profit of green certificate transactions and the profit of carbon transactions and based on the dynamic investment in power supply of the power system and the operation cost of the system in the planning period. The method better suits the actual operation condition of the power grid in an ultra-high-voltage direct-current receiving end region. The invention aims to eliminate the weak links in the existing power supply planning method and make the power supply planning scheme for the power grid in the ultra-high-voltage direct-current receiving end region more accurate.