The invention discloses a gas turbine overhaul plan determination method and apparatus. The method comprises the steps of determining to-be-overhauled gas turbines, and obtaining a target gas turbine set; determining unit equivalent operating hours and overhaul levels of all the gas turbines in the target gas turbine set, and generating an overhaul plan based on the unit equivalent operating hours and the overhaul levels of all the gas turbines in the target gas turbine set, wherein the overhaul levels are overhaul maintenance levels preset for all the gas turbine in the target gas turbine set in a gas turbine manufacturing factory; judging whether the overhaul plan meets a preset condition or not; and if the overhaul plan does not meet the preset condition, performing correction processing on the overhaul plan. Through the method and the apparatus, the problem of resource waste caused by low utilization rate of the equivalent operating hours of the gas turbines due to difficulty in comprehensive consideration of various factors during manual adjustment of the overhaul plan of the gas turbines in related technologies is solved.