The invention provides a patch-type communication line protector and a manufacturing method thereof. The patch-type communication line protector at least comprises pin electrode sheets, thermistor chips and a shell. The thickness of the pin electrode sheets is not more than 0.4mm. Each pin electrode sheet is provided with a pin spring on one side and a buckle on at least one end, and is fixed to the shell by the buckle(s). The thermistor chips are sheet-like structures, and are communicated with the pin electrode sheets through the surface electrode layers on the two sides of the sheet-like structures. The shell does not deform at least at high temperature of 260 DEG C, and is opened at the bottom. The inside of the shell is divided into 2-4 independent spaces by partition layers. One thermistor chip is installed in each independent space, and the two sides of the thermistor chips are connected with the pin electrode sheets through pin spring contacts. Surface mounting can be completedby one-time reflow welding of the whole board, the automation degree and production efficiency of the security unit are greatly improved, and the processing cost is greatly lowered.