The invention discloses a spray booth organic waste gas treatment system. The spray booth organic waste gas treatment system comprises a dry-type filter, adsorption-desorption boxes, a catalytic combustion apparatus, an adsorption fan, a desorption fan and a gas supplementing fan, wherein the number of the adsorption-desorption boxes is three, the catalytic combustion apparatus is internally provided with a preheating chamber, a catalysis bed, a heat exchanger and a first thermocouple, and a heater is arranged in the preheating chamber; and the spray booth organic waste gas treatment system also comprises a PLC control system, wherein the PLC control system comprises a PLC controller, a first thermocouple and a first over-temperature alarming device which are installed in the adsorption-desorption box, a second over-temperature alarming device which is installed in the catalytic combustion apparatus and a differential pressure gauge which is arranged in the dry-type filter, and the PLCcontroller is installed in a control cabinet. The spray booth organic waste gas treatment system solves the problems that the spray waste gas is easy in blockage, and the waste gas cannot be stably up to the standard; moreover, the automation and intelligent degree of the system is high, the treatment effect for the waste gas is good, the purifying efficiency is greater than 98 percent, and the waste gas can reach and be higher than the national emission standard; and moreover, the waste gas is catalytically combusted online, so that the zero emission of the waste gas is realized.