The invention discloses a multifunctional basket for a high-pressure steam sterilizer. Cylindrical support columns are connected with a basket body, the basket body is connected with carrying holes, the cylindrical support columns run through small holes in middle-layer stabilizing plates, and the middle-layer stabilizing plates are placed on the basket body; the basket body is symmetrically provided with the carrying holes, the cylindrical support columns are symmetrically distributed on the inner edge of the basket body, the middle-layer stabilizing plates are connected with the basket body,and the cylindrical support columns on the basket body penetrate through the small holes in the middle-layer stabilizing plates. Each basket is provided with the two middle-layer stabilizing plates according to the design, the aperture of each middle-layer stabilizing plate is larger than the diameter of each cylindrical support column, and the cylindrical support columns run through the small holes in the middle-layer stabilizing plates to enable the middle-layer stabilizing plates to be placed on the basket body; upper laminated boards are connected to the bracket body through the cylindrical support columns, and the small holes in the middle-layer stabilizing plates are distributed in each upper laminated board for the cylindrical support columns to run through. The multifunctional basket is simple in structure and convenient to use and solves the problems that the operation before and after digestion of total nitrogen and total phosphorus in water is complicated and it is inconvenient to place sterilized articles in high-pressure steam sterilizers; the spatial utilization rate of the high-pressure steam sterilizer is increased.