The utility model belongs to the technical field of power equipment, and particularly relates to a terminal strip capable of preventing wiring loosening and falling, which is suitable for each wiringterminal of a power system. According to the utility model, an external fastening device is additionally arranged at the upper part of the terminal strip, and the fastening device is an insulating rectangular plastic part in which a line channel and a fixing bolt are reserved; the external fastening device comprises a fastening bolt, a pressing gasket, a limiting buckle and a pressing bolt, and the fastening device is connected to the terminal strip; the pressing gasket is connected to an internally reserved line channel through the limiting buckle; upper and lower end connecting sheets are connected in the terminal strip. The terminal strip is connected with a fixing buckle A and a fixing buckle B. According to the utility model, wiring loosening and falling can be prevented, and problemsof short circuit or grounding of other loops caused by incapability of conduction of secondary loops of various electrical equipment due to loosening of terminals and falling of loop wire heads can be avoided. The device is simple in structure, simple and easy to operate and reasonable in design, and the safety coefficient of production operation and the personal safety of operators are remarkably improved.