Disclosures of the present invention describe a plant light raising and lowering apparatus. Particularly, a control module is configured for controlling a rope winch to complete at least one inching rotation along a clockwise direction or a counterclockwise direction, such that a base is driven by the rope winch so as to have an upward inching movement or a downward inching movement. Moreover, a counter is adopted for counting the direction, times and/or frequency of the inching rotation, and therefore the control module is able to know a total moving distance of the base by using the inching movement recording unit to record each time of the upward inching movement and each time of the downward inching movement. Therefore, a user is able to control the base to move back to a specific position such as an initial position or a previously-staying position.