Disclosed are an electronic expansion valve and a refrigeration system. The electronic expansion valve includes: a valve seat provided with an inlet, an outlet and a communication channel in communication with the inlet and the outlet; an actuator movably mounted in the valve seat, wherein the actuator is provided with a first position to block the communication channel and a second position to avoid the communication channel; and a driving mechanism connected with the actuator to drive the actuator to move between the first position and the second position, wherein the driving mechanism includes noise reduction members to reduce noise of the electronic expansion valve.