Organic waste gas treatment system and treatment method thereof

The invention relates to an organic waste gas treatment system and a treatment method thereof. The organic waste gas treatment system comprises a plurality of organic waste gas supply devices (1), anadsorption and desorption device (2), a catalytic combustion device (3) and a control device (4); and the adsorption and desorption device (2) comprises a first adsorption and desorption chamber (11)and a second adsorption and desorption chamber (12) which are used alternately, the catalytic combustion device (3) comprises a wind dividing cutting heat exchanging part (28), a heat storage part (37) and a catalytic combustion part (40), the control device (4) comprises a frequency converter (46) controlling the flow velocity or the flow quantity, a constant temperature control unit enabling a preset temperature, a first rising temperature, a second rising temperature and a heating temperature of heating of a burner to be constant within a preset range, and a treatment unit (78) which is connected with the frequency