The invention relates to a cigarette auxiliary suction device, comprising a mouth cover, a physical adsorption filter cartridge, a chemical adsorption filter cartridge, a freshener mixing cartridge, a smoke drainage device and an ash hopper, a physical adsorption filter cartridge, a chemical adsorption filter cartridge and a freshener The two ends of the mixing cylinder are respectively provided with flue gas flow holes, and the middle part of the physical adsorption filter cartridge, chemical adsorption filter cartridge and freshener mixing cylinder is provided with a hollow cavity along the axial direction, and the physical adsorption filter cartridge, chemical adsorption filter cartridge and freshener are mixed. The cartridges are combined by magnetic suction in turn and the three sections of the hollow cavity are connected to form a cigarette placement tube. The mouth cover is set at the end of the physical adsorption filter cartridge, the smoke drainage device is set at the end of the freshener mixing barrel, and the ash hopper is set at the cigarette placement tube. Inside the tube, the physical adsorption filter cartridge is filled with physical adsorption material, the chemical adsorption filter cartridge is filled with chemical adsorbent, and the freshener mixing cylinder is filled with freshener. The invention realizes the treatment of exhaled smoke while smoking, reduces the harm of second-hand smoke, and can be flexibly disassembled to facilitate portability and cleaning.