Cdx-ii type multi-purpose magnetic particle flaw detector, in addition to all the advantages of portable machine, but also has some advantages of mobile machine, the lower part of the instrument panel is equipped with two output sockets, can respectively supply E type, A type, D type probe and O-ring probe coil required AC current. Dc output can only be used for type A and type D yoke probe to magnetize the workpiece, E, D, O, A can be selected four probes, please switch the E/D switch to D during DC detection, at this time the DC output aviation socket can be connected to A or D probe; During AC testing, please switch the E/D shift switch to E, and the AC output aviation socket can be connected to any of the probes of type E, D, O, and A.