The utility model relates to an exhaust recovering device of a liquid storing tank, which is characterized in that the utility model is a condensing device connected with an exhaust valve of a liquid storing tank and an electric heating element is added outside a liquid recovering device body. The utility model utilizes the condensation principle to recover air which is highly volatile, so that the waste of raw materials is avoided and environmental pollution is avoided. Since media which are recovered via condensing contain a certain amount of water or easily crystallizing media, such as ethylenediamine, phenol, etc., condensing crystallization are easy to occur in a liquefying cavity body, a passage (called a cool block for short) of the recovering device is blocked, and the normal operation of the recovering device and the safety of the recovering device are influenced. Recovered condensate liquid solves the cool block problem via the electric heating element added outside the liquid recovering device body, the normal operation of the recovering device is ensured and the safety of the operation of the recovering device is enhanced.