Intercepting pipe fitting suitable for balcony sewage confluence vertical pipe in community

The utility model discloses an intercepting pipe fitting suitable for a balcony sewage confluence vertical pipe in a community, which comprises a water inlet pipe, a rainwater pipe, a blow-off pipe and an intercepting pipe, the water inlet pipe, the intercepting pipe and the blow-off pipe are positioned on the same straight line and are communicated with one another, the intercepting pipe is positioned between the water inlet pipe and the blow-off pipe, and the rainwater pipe is communicated with the blow-off pipe. The inner diameter of the intercepting pipe is smaller than that of the water inlet pipe, a filtering device is arranged above the intercepting pipe, and a rainwater pipe and an access hole which are transversely arranged are arranged on the water inlet pipe; according to the intercepting pipe fitting suitable for the balcony sewage confluence vertical pipe in the community, it can be guaranteed that wastewater is smoothly discharged into a sewage system in rainy days, rainwater is discharged into