The invention discloses a control method of an air conditioner. The method comprises the following steps: creating a control sheet, wherein the control sheet includes a plurality of time control nodes which are the control implementing time points, correspondingly set up with air conditioner control parameter information, and are defined by users; performing the control, wherein a controller has the clock function through which the system time is kept synchronous with the local time, and the controller can read the control sheet and then perform control for the air conditioner at the corresponding time control node according to the corresponding control parameter information. According to the control method of the air conditioner, the control sheet is created, the control performing time points and the air conditioner control parameter information corresponding to the time points are set, and then the system can read the content of the control sheet and perform the corresponding control according to the time of the corresponding time point in the sheet; the control sheet can be modified by the users at any time according to the actual demand, or automatically optimized through a cloud, so that the intelligent control of the air conditioner is really achieved, and meanwhile the problem of manmade faults can be solved.