Manual sealing machine adopts the principle of electromagnetic field induction heating. It uses high frequency current to generate magnetic field through inductive coil. When the magnetic force line passes through the sealing aluminum foil material, a large number of small eddies are generated instantaneously, which causes the aluminum foil to heat at high speed by itself and melt the sol compound on the aluminum foil, so as to paste on the sealing of the sealing material to achieve rapid speed. The purpose of quick sealing.