The invention relates to a regenerative catalytic direct combustion system for treating VOCs waste gas. The system comprises a waste gas inlet pipe, a catalyst direct combustion chamber, a flue gas outlet pipe, an air inlet pipe, an air outlet pipe, a draft fan and an exhaust funnel. An anti-explosion door is installed at the top of the catalyst direct combustion chamber. One end of the catalyst direct combustion chamber is provided with a main burner, the other end of the catalyst direct combustion chamber is provided with an auxiliary burner. The air inlet pipe and the waste gas outlet pipe are inversely installed. A thermal couple and a catalyst layer are respectively installed at two sides in the catalyst direct combustion chamber. At least two layers of regenerative body are installed between catalyst layers. The regenerative catalytic direct combustion system for treating VOCs waste gas is reasonable in structure, good in energy-saving effect, low in investment and operation cost, and high in VOCs treatment efficiency, and therefore the system can be widely used in the field of VOCs waste gas treatment.