The invention discloses a manual sampling device for insulator contaminants and a sampling method of the manual sampling device. The manual sampling device comprises sampling cloth, a sampling bar and a fixing element, wherein the sampling bar comprises a ball-shaped end and a handle, the ball-shaped end of the sampling bar is wrapped with the sampling cloth, and the tail part of the sampling cloth is tightly locked on the sampling bar through the fixing element. According to the manual sampling device for the insulator contaminants and the sampling method of the manual sampling device, the contaminants on the surface of an insulator can be sampled thoroughly and completely, so that accuracy of insulator contaminant sampling and accuracy of insulator contamination degree measurement are improved.