The utility model relates to an intelligent on-line monitor apparatus for hybrid line operation fault monitor, which belongs to the technology field of a power transmission line monitor apparatus. The purpose is to provide the apparatus which can satisfy the requirement of hybrid line operation fault monitor. The technology scheme is employed as following: an intelligent monitor unit comprises an overhead intelligent monitor unit and a cable line monitor unit; the overhead intelligent monitor unit is arranged on an overhead line; the cable line monitor unit is arranged on a cable line; the overhead intelligent monitor unit and the cable line monitor unit are both connected with a communication terminal through a wireless radio frequency network; the communication terminal is connected with a substation in a wired or wireless mode; and the substation is connected with a main station through a serial port communication line. The intelligent on-line monitor apparatus for hybrid line operation fault monitor is suitable for electric power departments.