Prefabricated drainage ditch with sundriesconvenient to clear

The invention discloses a prefabricated drainage ditch with sundries convenient to clear in the related technical field of drainage ditches. The prefabricated drainage ditch comprises a plurality of drainage ditch main bodies, the adjacent drainage ditch main bodies are connected through a pollution discharge main body, pollution discharge assemblies are arranged in the pollution discharge main bodies, the pollution discharge assemblies are used for enabling the adjacent drainage ditch main bodies to be in a non-through state in a normal state, and waste water in the pollution discharge main body can be automatically discharged into the next drainage ditch main body after being stored to a certain amount, so that the sundries accumulated in the drainage ditch main bodies can be scoured and cleared by larger impact force of the accumulated waste water, domestic waste water at the water inlet end gathers together, the overall pressure intensity is increased, when the collected domestic waste water gathers to th