The invention discloses a 10kv power distribution line high-voltage line connector fuse melting alarm system which includes detecting devices and a receiving device. The at least two detecting devicesare respectively arranged at CTs on a power supply line and power supply line branches. Each detecting device includes a current measuring element, a time element and a single chip microcomputer connected in turn, and the current measuring element, the time element and the single chip micro computer are connected with the corresponding CT to form a detection circuit. The lower end of a high-voltage line connector fuse at each CT is connected with a voltage measuring element connected with the corresponding single chip micro computer. The single chip microcomputers process the detection information of the current measuring elements, the time elements and the voltage measuring elements and input the detection information to the receiving device through a communication device, and the receiving device gives a sound-light alarm. The detecting devices are arranged at the CTs on the main line and the branch lines, and the alarm can be raised in time for a faulty line. The number and position of the faulty line can be obtained through a display, and the thus, the faulty line can be conveniently maintained.