The utility model provides a portable magnetic iron ore mine locator, belongs to mine prospect instrument technical field for conveniently carry out magnetic iron ore prospect operation. Its technical scheme is: control box fixed connection installs on the control box at telescopic canular rods's front end, alarm and pressure switch, and alarm and pressure switch are connected, and one side of terminal surface is connected before the rear end of fixed connecting rod and the control box, and the front end of fixed connecting rod is connected through the hinge with rear end one side of magnetic iron box forever, and opposite side and the adjustable spring's of magnetic iron box rear end front end is connected forever, and adjustable spring's rear end compresses tightly with the pressure switch on the control box to be connected, forever the interior permanent magnet of installing of magnetic iron box. The utility model discloses simple structure, convenient to use can realize that in certain extent to the detection of the ore body of working face different positions, avoids the detection personnel directly to expose under the naked rock of working face, also can make the geology face of detection personnel in to the certain limit survey simultaneously, reduce the frequency in conversion place, improvement work efficiency.