The invention belongs to the technical field of gas hydrate application, storage and transportation, and particularly relates to a separator for hydrate particles in a gas pipeline. The separator based on spiral flow is used for separating natural gas hydrate particles, a first solar storage tank is used for collecting and heating hydrate solid particles, so as to decompose the hydrate particles into nature gas through heating, and finally, an air compressor is used for conveying the natural gas into a pipeline. Therefore, normal and safe running of the gas pipeline is achieved.