The invention relates to a self-volatilization system of air conditioner condensed water. The self-volatilization system comprises a condensed water receiving disc, a condensed water draining pipe, a condensed water volatilizing water tank, an air conditioner exhaust heat pipe and water sucking volatilization pieces; the condensed water receiving disc is arranged below a heat exchanger of an air conditioner indoor unit; one end of the condensed water draining pipe is connected with the condensed water receiving disc; the other end of the condensed water draining pipe is connected with the condensed water volatilizing water tank, and is mounted in a cooling air outlet position of an air conditioner compressor; the air conditioner exhaust heat pipe is coupled to the condensed water draining pipe; and the water sucking volatilization pieces are mounted in the condensed water volatilizing water tank, and are arranged side by side. The self-volatilization system of the air conditioner condensed water has the following advantages: the air conditioner exhaust heat pipe is used for heating the condensed water draining pipe to accelerate heating of condensed water; the volatilization of the condensed water in the condensed water volatilizing water tank is further accelerated through heat blown out through a cooling fan of the air conditioner compressor; the draining problem of the condensed water of an air conditioner is solved; and the problem of incapability of draining water on the outer side of a building is effectively solved.