Magnetic bead preserving fluid as well as preparation method and use method thereof

The invention provides a magnetic bead preserving fluid. The magnetic bead preserving fluid comprises a preserving fluid A and a preserving fluid B, wherein the preservation solution A comprises a buffer solution, protein, a thickening agent A, a surfactant, dodecyl methacrylate and a preservative; the preserving fluid B comprises an organic solvent and a thickening agent B; the thickening agent A is peptone; the thickening agent B is one or more of alumina silicate, montmorillonite and bentonite; a preservation solution A consisting of a buffer solution, protein, a thickening agent A, a surfactant, dodecyl methacrylate and a preservative and a preservation solution B consisting of an organic solvent and a thickening agent B are adopted as magnetic bead preservation solutions, and meanwhile, a use method of the magnetic bead preservation solutions is adopted, so that the dispersity of the magnetic beads after long-term storage is guaranteed, the magnetic beads are not easy to cake, and the magnetic beads are