The invention provides an air door switching condensing type clothes dryer. The air door switching condensing type clothes dryer comprises a drying air path; the drying air path is composed of a cylinder, a cylinder air outlet, a front air channel, a condenser, a rear air channel and a cylinder air inlet which are sequentially connected, wherein the front air channel is provided with a first air door, which is used for switching the front air channel to communicated with the external environment as well as the drying air path, and the rear air channel is provided with a second air door for communicating the rear air channel with the external environment or blocking the rear air channel from the external environment. By arranging the first air door and the second air door on the drying air path of an existing condensing type clothes dryer, arranging a sensor for detecting drying degree of clothes onto the clothes dryer, and controlling opening and closing of the first air door and the second air door according to the parameters of the drying degree of the clothes, which are obtained from the sensor through detection, the air door switching condensing type clothes dryer achieves switching between a closed circulating drying air path and an open type drying air path and meanwhile controls opening and closing of a condenser, thereby achieving the technical effects of saving time and energy.