The utility model discloses a six-blade matrix PDC bit, which comprises a bit body, wherein the crown portion at the front end of the bit is provided with blades; teeth are fixedly installed on the blades; the number of the blades is six; the blades are distributed around the center of the crown portion of the bit body; the distribution angles of the blades respectively are 0 degree, 60 degrees, 125 degrees, 180 degrees, 235 degrees and 295 degrees; the number of the teeth is 46; and the number of the teeth respectively distributed on the blades respectively is 11, 6, 8, 6, 10 and 5. The six-blade matrix PDC bit adjusts distribution angles of the blades and distribution of the teeth on the blades based on the existing bit structure, accordingly the service life of the overall bit is prolonged, and drilling speed is increased.