The invention provides an operation control method, an operation control device, an air conditioner and a storage medium. The operation control method is suitable for the air conditioner, an indoor fan is arranged in an indoor unit of the air conditioner, an air outlet is formed in the indoor unit, and an air guide assembly is arranged at the position of the air outlet. The operation control method includes the steps that when it is detected that a heating manner is executed and the room temperature and/or the pipe temperature of an indoor heat exchanger meet/meets the cold air prevention condition, the indoor fan is controlled to be started, and the air guide assembly is adjusted to a first air outflow direction; and when it is detected that the working condition parameters of the indoorunit meet the adjusting conditions, the air guide assembly is adjusted to a second air outflow direction, wherein in the first air outflow direction, the indoor fan drives airflow to flow to the region away from a target, and in the second air outflow direction, the indoor fan drives the airflow to flow to the region close to the target. By means of the technical scheme, the heating speed of the air conditioner can be increased, and rapid heating is achieved.