The invention discloses a smoking device capable of reducing public hazard and automatically accumulating the ash. The smoking device consists of a smoking tube (1), a smoking pipe (2) and a hood (3), wherein one end of the smoking tube (1) is provided with a smoking nozzle (4), the other end of the smoking tube (1) is connected with the smoking pipe (2), the middle part of the smoking pipe (2) is provided with a cigarette insertion opening (5), the periphery of the insertion opening (5) is an ash storage groove (6), the top of the smoking pipe (2) is connected with the hood (3), the upper part in the hood (3) is provided with a filter sheet (7), the hood (3) and the smoking pipe (1) form a right angle and are respectively connected with the smoking pipe (2), the smoking tube (1) and the smoking pipe (2) are in insertion type connection or are connected into a whole, the hood (3) and the smoking pipe (2) are in insertion type or threaded type connection, the appearance of the smoking pipe (2) is in a straight tube shape or a projected drum shape, the filter sheet (7) is formed by clamping filter media by two layers of gauzes, the gauzes are carriers and are humidified by alcohol, and the filter media are active carbon or diatomite or bentonite. The smoking device has the advantages that the structure is simple, the use is convenient, the dust pollution caused by smoking can be reduced, and the harm to the environment air caused by harmful chemical ingredients in the smoke gas can also be reduced.