The invention relates to the field of operation equipment for oil and gas fields, in particular to an oil pipe scaling detection tool. The oil pipe scaling detection tool comprises a body and at least one positioning pin. The body is provided with a cavity. The positioning pins are arranged on the cavity at intervals in a penetrating mode. The oil pipe scaling detection tool further comprises a shear type structure formed by two shear sheets. The outer side of the shear type structure protrudes out of the body. When the oil pipe scaling detection tool is used for detection, the scaling situation in an oil pipe can be accurately detected out.