The invention relates to an integration system applicable to the high-concentration odor treatment. The integration system comprises a box body as well as a washing deodorizing device, a biological deodorizing device, a photolysis deodorizing device, a draught fan and an exhaust barrel which are integrally arranged inside the box body, wherein an air inlet pipe of the biological deodorizing device is respectively connected with an air inlet pipe and an air outlet pipe of the washing deodorizing device by virtue of a connection air pipe; an air inlet pipe of the photolysis deodorizing device is connected with an air inlet pipe of the washing deodorizing device and an air inlet pipe and an air outlet pipe of the biological deodorizing device by virtue of a connection air pipe, and an air outlet pipe is connected with an air inlet pipe of the photolysis deodorizing device by virtue of the connection air pipe; the draught fan is connected with an air outlet pipe of the photolysis deodorizing device; the exhaust barrel is connected with the draught fan, the top of the exhaust barrel extends out of the box body, and the deodorized gas reaching the standard and pumped out by the draught fan is discharged to high altitude by virtue of the exhaust barrel. According to the integration system, by reasonably integrating the washing deodorizing technology, the biological deodorizing technology and the photolysis deodorizing technology, connectors among various devices are simple; the integration system is applicable to the fluctuation of different odor components and concentrations, and the maximum deodorizing efficiency can reach 99.99 percent or more.