The invention discloses a rapid steam implementation method, a steam cooking device and method and a storage medium. The rapid steam implementation method includes the initial control step, wherein the initial control step includes the substeps that a steam boiler (1) is started for constant-powder heating at preset heating power W; a water pump (21) is synchronously started to supply liquid to the steam boiler (1) according to initial liquid inlet flow X1, so that steam is generated within the set duration T for steam output in a second. According to analysis in principle, steam output in a second can be achieved according to the balance relationship between the heating amount of the circumferential wall of a hearth and the heating amount and the evaporation water amount capable of provided by a computer. In the relational expression among variables of the duration T for steam output in a second, the preset heating power W and the multiple Y, when the required duration T for steam output in a second and the multiple Y are given, the preset heating power W can be selected direction, and the effect of steam output in a second can be achieved.