Miniature high-pressure static mixer for liquid chromatograph

The invention discloses a miniature high-pressure static mixer for a liquid chromatograph. The mixer comprises a main body sleeve (1), a base (2), supporting rings (3), single-hole sealing gaskets (4), multi-hole sealing gaskets (5), mixing cavities (6) and end part sealing gaskets (7), wherein the main body sleeve (1) is connected with the base (2; at least two groups of mixing cavities (6) are installed in the main body sleeve (1) in series; each mixing cavity (6) is composed of one supporting ring (3) and sealing gaskets at both ends of the supporting ring (3); the sealing gaskets comprisethe single-hole sealing gaskets (4), the porous sealing gaskets (5) and the end sealing gaskets (7). Through the single-hole and multi-hole design of the sealing gaskets, the central flow velocity ofa fluid passing through the mixing cavities (6) is changed, so that complex turbulence is formed, and the mixing efficiency is improved; and the mixer with internal components in a series connection installation mode has the c