The utility model discloses a PDC drill bit tool with alternating cutting traces, and belongs to the field of rock breaking tools for drilling equipment. The PDC drill bit tool comprises an eccentric shaft, a housing body, a PDC drill bit and a cycloid shaft, wherein the PDC drill bit is fixedly connected on the cycloid shaft, the cycloid shaft is fitted in the housing body and can carry out eccentric rotation relative to a variable trace, an eccentric shaft segment on the eccentric shaft is fitted in the inner cavity of the cycloid shaft to form a rotary pair, and an inner flow channel of the eccentric shaft and the inner flow channel of the cycloid shaft communicate with the inner flow channel of the PDC drill bit. Movement along alternating cutting traces substantially improve the digging capacity of the PDC drill bit, the rock breaking efficiency is improved, and the wearing speed of cutting teeth can be slowed down. The PDC drill bit tool is especially advantageous for deep stratum which is hard to drill and high in hardness, and high abrasive stratum.