The invention discloses waste gas absorption and treatment equipment used in chemical plants, which comprises a gas collection tray, a working chamber, a furnace, a fuel filling chamber, an exhaust pipe, a fixed frame, an air supply tray, a first air pipe, and an air suction frame , hair dryer, turntable, transmission gear, socket hole, second ventilation pipe, suction fan, tray loading slot, motor, distribution box, burner, fire slot, third ventilation pipe and baffle. The beneficial effects of the present invention are: the waste gas after combustion treatment is passed out from underground to the outside of the factory area through the exhaust pipe, and while the gas collecting plate is collecting gas, the motor rotates the gas collecting plate continuously through the transmission gear, which improves the air quality. The fluidity ensures that the device is more efficient and comprehensive in absorbing and collecting exhaust gas inside the factory area, and ensures the high quality of exhaust gas absorption and treatment. The device has a high degree of automation during operation and does not require manual manipulation. The installation and disassembly of the device is very convenient and fast, which ensures the convenience of use; the device is easy to operate and the connections of various components are flexible.