PURPOSE: To treat safely and inexpensively a spent galvanic cell by charging the spent galvanic cell into a vessel formed with resin concrete, etc., cementing the cells with a cementing agent and further covering the vessel with a lid made of resin concrete to hermetically seal the inside.

CONSTITUTION: A spent galvanic cell 3 is charged into a vessel 1 formed with resin concrete or resin mortar, the cells are cemented with a cementing agent such as cement paste and the inside is hermetically sealed by covering the vessel with a lid 5 made of resin concrete. Namely, the substances harmful to the human organism, etc., contained in the cell are enclosed in the vessel by utilizing the characteristic of resin concrete and the spent galvanic cells can be treated safely and inexpensively.