The utility model relates to a sampler for an environment-friendly drilling fluid additive. According to the sampler, a sampling sharp groove is formed in the front end of a sampling groove, a baffle is arranged at the tail end of the sampling groove, the handle of the sampler is connected to one side of the baffle, a discharge port is formed in the bottom of the sampling groove close to the baffle in advance, and the discharge port is downwardly connected with a material receiving funnel; furthermore, a sampling bag lock sleeve is connected outside the material receiving funnel, the handle of the sampler is cylindrical, a sampling pushing arm penetrates through the handle of the sampler and the baffle to reach the sampling sharp groove of the sampling groove to be connected with a sampling spoon. By adopting the material receiving funnel and the sampling bag lock sleeve, the sampler and the sampling bag are in sealing connection, the built-in sampling spoon is used for collecting the drilling fluid additive, and the sampler can rapidly sample the drilling fluid additive in various sever environments and can protect sampling people and the environment from being hurt.