The invention discloses a device capable of collecting zinc spraying residues automatically. The device comprises a case, a recoverer, an automatic sealing door, a controller, a zinc spraying device, a conveying rail, a recycling pipeline, a connecting block, a storage device, a jetting pipeline, a motor, a fixing frame, a bottom plate, a guide pope, supporting feet, a zinc spraying machine, a nut, a rotary wheel, pipe clamping rings, an upper pipe clamping ring shell, a cast iron pipe, a lower pipe clamping ring shell, a rotary fixator and a clamping plate. The device has the beneficial effects that the zinc spraying device is provided with the recoverer; due to the facts that the zinc spraying machine uses high-speed airflow to atomize or micronize melted metal, and atomized metal particles are accelerated so that an atomized particle jet flow can be deposited to the surface layer of the cast iron pipe at a high speed, the atomized metal particles are scattered in the cast, waste is cased, the atomized metal particles are deposited in the case after long-time use, and the service life is affected. The pipe clamping rings of replaceable dimensions are arranged at the two ends of the rotary fixator and used for fixing pipelines of different dimensions, and the application range of the device is widened.