A temperature magnetosensitive switch temperature detection system is simple in structure and easy to use, and comprises the following units: a rectangular bath slot; a fixed frame fixed on the bath slot opening periphery, wherein the fixed frame comprises a front strip, a left strip, a rear strip and a right strip fixedly connected end to end, at least one positioning groove is arranged on the inner side of the front tops of the left and right strips, and the positioning grooves on the left and right strips are arranged right in opposite in the left-right direction; at least one vertical insulation plugboard extending in the left-right direction, wherein at least one long channel is arranged below the plugboard, the plugboard front side is provided with clamp sets matched with the long channels one by one, each clamp set comprises a plurality of clamps, the clamp comprises a first chuck and a second chuck, and the plugboard left and right sides respectively extend to form a positioning portion received by the positioning groove; a mounting plate fixedly connected with the left strip rear portion, the right strip rear portion and the rear strip; a heater fixed on the mounting plate; and a caution device fixed on the heater.