High-pressure-resistant liquid chromatography connector and fluid type connection system achieving zero dead volume

The utility model discloses a high-pressure-resistant liquid chromatography joint and a fluid type connecting system for realizing zero dead volume. The high-pressure-resistant liquid chromatogram connector comprises an assembly nut, an outer thread and a tight breaking end face, and a first axial hole is formed in the assembly nut in a penetrating mode; the hoop comprises a pressing end face and an extending section, the pressing end face abuts against the pressing end face, and a second axial hole allowing the pk pipe to penetrate through is formed in the hoop in a penetrating mode; and the peek tube comprises a tube body and a bearing end, a third axial hole allowing the capillary tube to penetrate through is formed in the peek tube in a penetrating mode, the tube body is embedded into the second axial hole, and one end of the tube body extends into the first axial hole. According to the technical scheme, the high-pressure-resistant liquid chromatography connector is high in adaptability and can be matched