The invention provides a storage tank volatile organic compound recovery system. The storage tank volatile organic compound recovery system includes a first storage tank, a nitrogen sealed system, a second storage tank, a volatile organic compound collection system, and a volatile organic compound recovery system; the nitrogen sealed system includes a Y-shaped filter, a pressure gage and a self-actuated regulation valve; the volatile organic compound collection system includes pipeline flame arresters, automatic stop valves, and pressure transmission devices which are arranged on the tops of the first storage tank and the second storage tank, and an automatic stop valve positioned on a volatile organic compound collection pipe; and the volatile organic compound recovery system includes a third storage tank, an induced draft fan, a suction tower, pumps, adsorption towers, a vacuum pump and an anti-explosion flame-arrest ventilation cap. The storage tank volatile organic compound recovery system can recover crude oil and volatile organic compounds which are discharged by a product tank field in a non-organization manner.