The invention relates to the technical field of a temperature controller, in particular to a compactly-assembled temperature controller. The compactly-assembled temperature controller comprises a shell, wherein temperature sending cover is arranged on an upper port of the shell, two
electrical connection terminals are arranged on a base plate of the shell, a thermosensitive sheet and an actuating mechanism are arranged in the shell, the actuating mechanism comprises a support, the thermosensitive sheet is transversely and fixedly arranged at the upper end of the support and props against the
temperature sensing cover in a matching way, a movable
plunger is vertically arranged on the support, an elastic shift fork is arranged on the support, a fixed end of the elastic shift fork is connected with the support in a matching way, the elastic shift fork and the lower end of the
plunger are arranged in an integrated linkage way, an actuating arm is arranged on a movable end of the elastic shift fork, and the two ends of the actuating arm are electrically connected with the two
electrical connection terminals in a pair way. The compactly-assembled temperature controller is reasonable in structure, the thermosensitive sheet, the elastic shift fork and the movable
plunger are fixedly arranged to form integrated linkage by the H-shaped support, the structural number of the temperature controller is simplified, and the overall structural height is effectively reduced; and the compactly-assembled temperature controller has the advantages of compact arrangement, sensitive response and the like, is convenient to assemble and is stable in working in a large-current working condition.