During the actual operation,it is discovered that low starting flights punctuality rate will directly affect all-day flight normality.According to whether the cabin door is closed，the paper divided the flight process into two parts:”before the cabin door closed”and”after the cabin door closed” so that it can help to analyses the starting flights process control. The paper’s first part introduces three processes of “before the door closed”and the runway choosing problem of”after the door closed”.The second part puts forward AOE critical path method to resolve optimization and controlling strategies of “before the door closed”.Finally,this paper discusses the runway choosing problem to make sure the aircraft could leave the airport as soon as possible after the cabin door is closed.