The invention provides a continuous stoping and filling mining method for a gently inclined medium-thick ore body and belongs to the technical field of mining. According to the continuous stoping andfilling mining method, the gently inclined medium-thick ore body is divided into sections in the vertical direction, the ore body is divided into stoping units, the stoping units are divided into strips in the moving direction of the ore body, separation pillars are reserved between the adjacent strips in the moving direction of the ore body, inclined ramps are excavated in the separation pillars,and stope connection roadways are excavated along the inclined ramps; the strips in the same stoping unit are divided into six first-step stopes and six second-step stopes, interval stoping is conducted on the stopes in the same stoping units, stoping is conducted on the first-step stopes firstly, then the first-step stopes are filled, and after filling body curing reaches the specified time, stoping is conducted on the second-step stopes; and after several adjacent stoping unit ore main bodies are completely mined and the stopes are filled, the stoping is conducted on the separation pillars,top safety pillars and bottom safety pillars between the stoping units. According to the continuous stoping and filling mining method, the mechanical degree is high, the production capacity is high,the ore stoping rate is high, the ore dilution rate is low, and safety is good.