The invention relates to the field of metro station foundation pit confined aquifer precipitation, in particular to a high water pressure precipitation well structure in a metro station foundation pitand a still water grouting blocking method, and the problem about blocking of a precipitation well under the situation of high water pressure is solved. The high water pressure precipitation well structure comprises a well pipe in the metro station foundation pit, the well pipe is a closed steel pipe, the top elevation of the well pipe is larger than that of the natural water level, the well pipepenetrates a bottom plate and a top plate of a station body, and a water pump is arranged in the well pipe. The still water grouting blocking method for the high water pressure precipitation well inthe metro station foundation pit is provided. A closed space is formed through a body structure and the precipitation well pipe, the water level is automatically elevated after water pumping is stopped, the pressure of the stratum and the water pressure inside and outside the precipitation well are balanced, still water is formed, grouting blocking is conduced, the method is novel, and construction is safe and reliable. The high water pressure precipitation well structure and the still water grouting blocking method are suitable for blocking of all precipitation wells, but the advantages in blocking of large water pressure and high water level shallow water or confined water precipitation wells are obvious, the technology is advanced, the application range is wide, practicability is high,and the popularization prospects are good.