The invention relates to a storage tank gas phase communication device. The storage tank gas phase communication device mainly solves the problem of breathing loss in the prior art, and meanwhile solves the problems of gas phase fire blasting risks and lower oil-gas recovery efficiency. The storage tank gas phase communication device comprises gas phase communication pipes (1), an oil-gas adsorption and desorption tank (2), an oil-gas recovery pipe (3), an oil-gas recovery device (4), a control valve (5), quick action emergency valves (7), back-fire relief valves (8) and at least one storage tank (9); the gas phase communication pipes (1) led out from gas phase space of each storage tank (9) are provided with the quick action emergency valves (7) and the back-fire relief valves (8), the oil-gas adsorption and desorption tank (2) is provided with the oil-gas recovery pipe (3), and the oil-gas recovery pipe (3) is connected with the oil-gas recovery device (4). According to the technical scheme, the above problems are better solved, and the storage tank gas phase communication device can be used for storage tank gas phase communication.