Solid-phase extraction device for chromatographic detection

The utility model discloses a solid-phase extraction device for chromatographic detection. The solid-phase extraction device comprises a support frame, the two ends of the assembling cylinder are fixedly arranged on the supporting frame; a U-shaped box is arranged in an inner cavity of the assembling cylinder in a penetrating mode. A first butt joint is arranged at the front end of the U-shaped box; a solid-phase extraction column is embedded in the U-shaped box; the input end of the solid-phase extraction column is tightly butted to the rear end of the first butt joint to realize communication; the output end of the infusion pump is slidably provided with a sample injection head which is butted to the front end of the first butt joint to realize communication; in the assembling process, the first butt joint arranged at the front end of the U-shaped box and the sample injection head at the output end of the infusion pump are in rapid lap joint to achieve communication, the replacing and filling efficiency of