The utility model discloses a disconnect -type concrete dielectric flux test fixture is mainly filled up by frid, baffle, copper ring and rubber circle and constitutes. Its characterized in that: the copper mesh is fixed in frid circular slot one side, and the rubber circle fills up to be put in the copper mesh outside, water injection hole and circuit hole have been beaten to the central both sides in frid top, and four apertures that are used for inserting the bolt are beaten in the plane four corners, baffle plane beats in the four corners four apertures that are used for inserting the bolt, the frid and for the baffle bolt closely couple. The utility model discloses test fixture has carried out the modularization decomposition with the concrete dielectric flux, has overcome the shortcomings such as structure complicacy, washing inconvenience and price height of traditional anchor clamps, has simple structure, convenient operation, the easy washing to advantage such as with low costs has better popularization and application prospect.