The disclosure provides a chain type stepless transmission, including: a box (60), a pair of active cone discs including a fixed cone disc (33) and a moving cone disc (2), a pair of passive cone discs including a fixed cone disc (33) and a moving cone disc (2), an input shaft (42), an output shaft (31) and a chain (34), there are a group of pulleys (3) in the middle of each pair of passive cone discs and in the middle of each pair of active cone discs respectively, and the number of the group of pulleys (3) may be an arbitrary value, such as 2, 3, 4, 5, 6, 7, 8, etc.. In the stepless transmission, the fixed cone disc (33) and the moving cone disc (2) then transmit power from the input shaft (42) to the output shaft (31) through the chain (34), thereby realizing a high power of power transmission and a high torque.