The utility model discloses a sampling device and contain this sampling device's reaction vessel belongs to chemical engineering and chemical machinery field. The utility model discloses a sampling device, including material placing part spare, set nut, gland nut, O shape circle, support, sampling tube, the sampling tube contacts with material placing part spare, set nut, gland nut, O shape circle, support to port B's extension in -process from port A in proper order, support fixed mounting is in the container kneck, and the installing port bore is the same with the sampling tube external diameter, and the sampling tube passes the support. The utility model discloses a sampling device can be under the sealed condition of the jar body, and glue reaction system or take a sample in the high different sites that contain solid reaction system to the height, makes the sample simple more swift, and labour saving and time saving saves worry. The utility model discloses a sampling device has removed the restriction to the sample of high viscosity reaction system, realizes the accurate sample in different sites.