Roller linear guide rail convenient to disassemble and assemble

The roller linear guide rail comprises a guide rail body, a sliding block body is connected to the outer side of the upper end of the guide rail body in a sliding mode, an installation groove is formed in the middle of the lower end of the sliding block body, the sliding block body is installed on the guide rail body in a sliding mode through the installation groove, and fixing grooves are formed in the two sides of the installation groove. According to the sliding block, the sliding block main body slides on the guide rail main body in an auxiliary mode through the roller assembly arranged in the fixing groove, the friction force generated when the sliding block main body slides is reduced, and a T-shaped fixing block fixedly connected with one side of a [-shaped fixing frame in the roller assembly is matched with a T-shaped limiting groove communicating with one side of the fixing groove; the rolling wheel assembly is limited and fixed, the rolling wheel assembly is prevented from moving when the sliding bl