The utility model relates to the technical field of silicone rubber heating plates for instruments. The silicone rubber heating plate comprises a heating plate body, the cable comprises an upper covering layer, a lower covering layer and connecting wires, the left side of the upper covering layer is fixedly connected with a connecting wire; the right side of the connecting line is slidably connected with a bottom shell. A sliding groove is formed in the front end face of the bottom shell. A clamping groove is formed in the inner side wall of the bottom end of the bottom shell; the bottom end of the bottom shell is slidably connected with a rotating rod. The bottom end of the rotating rod is fixedly connected with a knob; the left side of the rotating rod is fixedly connected with a clamping block; sliding blocks are slidably connected to the inner side walls of the sliding grooves. Fixing holes are formed in the inner sides of the sliding blocks. According to the utility model, throughthe arrangement of the clamping blocks, the clamping grooves and the fixing holes, the safety of a wiring position is ensured, and the design is novel in conception and scientific in design, has hugeeconomic benefits and wide market prospects, and is worth popularizing and using.