PVC pipe with fireproof function and use method thereof

The invention provides a PVC pipe with a fireproof function. The PVC pipe comprises a PVC pipe body and further comprises a fireproof outer pipe, wherein the PVC pipe body is sleeved with the fireproof outer pipe, a plurality of fixing blocks are arranged on the inner wall of the fireproof outer pipe in the circumferential direction of the fireproof outer pipe at equal intervals, clamping blocks are arranged at the ends, away from the inner wall of the fireproof outer pipe, of the fixing blocks, clamping bases with the same number as the fixing blocks are arranged on the outer wall of the PVC pipe body in the circumferential direction of the PVC pipe body at equal intervals, and clamping grooves used for being connected with the clamping blocks are formed in the clamping bases. By the adoption of the technical scheme, the clamping grooves of the clamping bases on the PVC pipe body are aligned with the clamping blocks in the fireproof outer pipe, the PVC pipe body is installed in the fireproof outer pipe, the fireproof effect on the PVC pipe body is achieved by means of the fireproof characteristic of the fireproof outer pipe, and when the outside of the fireproof outer pipe is stressed, supporting columns formed by connecting the clamping blocks and the clamping bases can support the inner wall of the fireproof outer pipe, and the strength of the fireproof outer pipe is improved.