A drill and drill cover and autogenous bone collector using the same are provided. The autogenous bone collector comprises s shaft unit connected to a driving device and a cutting unit which revolves and collects bone paticles of a patient. The cross-sectional area of the cutting unit is from 10% to 40% of an area of an imaginary circle having a radius corresponding to a distance from the center of the cutting unit to the outermost end portion of the cutting unit.
