Integral mining drill with replaceable cutting structure

The invention relates to an integral mining drill with a replaceable cutting structure. The integral mining drill comprises a threaded connection part, a loading and unloading clamping part and a cutting body, wherein the threaded connection part, the loading and unloading clamping part and the cutting body are successively in transition connection by taking the same central axis as a center; a plurality of cutting pick holders are distributed on the cutting body; each cutting pick holder is at least provided with an outer ring of gauge teeth and a cutting pick; radial dimensions between the peak of each cutting pick tool bit and the center of the cutting body are all unequal; an included angle between the center line of each cutting pick and the center line of the cutting body in a front projection surface is unequal and has an range of 15-45 degrees; an included angle between the center line of each cutting pick and an X axis in an overlooking projection surface is unequal and has an range of 10-88 degrees. The angles of the cutting picks are subjected to optimization design to guarantee that the cutting picks are broken in a pit bottom in a drilling process and also guarantee the gauge protection function of a well wall. After one cutting pick loses efficiency, a new cutting pick replacing the cutting pick can be reused till a drill body loses the efficiencies, the service life of the drill is prolonged, and mining cost is lowered.