The invention relates to a cigarette end extinguishing device which comprises a cigarette holder and a cigarette, wherein the cigarette end extinguishing device is arranged inside the join of the cigarette holder and the cigarette; the cigarette end extinguishing device further comprises a shell, wherein a sealing partitioning board is hinged inside the shell, a spring is fixedly arranged between the bottom of the left side of the shell and the sealing partitioning board, a hinge pin is arranged corresponding to the sealing partitioning board, on the lower part of the shell, the lower end of the hinge pin is connected with a prizing rod, a support block is arranged on the shell in the middle of the prizing rod, a hand press block is arranged on the right end of the prizing rod, the prizing rod prizes through the support block so as to extract the hinge pin, the sealing partitioning board pushes the extinguishing liquid inside the right side of the shell, and the extinguishing liquid is stressed to break through a sealed plastic film at the right opening of the shell, so as to reach the cigarette ignition point. According to the invention, a special extinguishing device is designed aiming at the cigarette ends easily causing fire, and the device can extinguish cigarette ends rapidly, so that the potential safety hazards of fires are eliminated.