Leak-proof device for transport of dangerous chemicals

The invention discloses a leak-proof device for transport of dangerous chemicals. The leak-proof device comprises a tank body and a support device mounted below the tank body, wherein the support device is mounted on a transport vehicle. The leak-proof device further comprises a liquid bag protective layer, an air bag protective layer and a leak-proof layer, which are arranged sequentially from the inside out, wherein the liquid bag protective layer comprises adhesive slag particles and multiple liquid bags; each liquid bag is filled with an adhesive liquid; the multiple liquid bags are connected to form a ring and respectively attached to the cylindrical surfaces of the tank body and the air bag protective layer; the spaces between the adjacent liquid bags are filled with the adhesive slag particles; the air bag protective layer comprises multiple air bags and connecting pieces which connect the multiple air bags; and the connecting pieces are used for connecting the multiple air bagsin series. The leak-proo