To provide an optical pickup device capable of surely positioning and fixing an optical unit by highly accurately adjusting it without distorting the optical unit.

Sliding parts 22a and 22a coincident with a cylindrical surface are formed in the base case 22 of an optical unit 20 having light emitting and receiving elements, and the sliding surfaces 22a and 22a are guided by guide parts 32a and 32a as parts of the cylindrical surface of a loading hole 23. The optical unit 20 is held by the holding part 41 of a support member 40, and the rotation of the optical unit 20 is adjusted by rotating the support member 40. When attaching screws 45 and 45 are tightened, the optical unit 20 is pressed to a stopper part 32e to be positioned by the elastic deformation of elastic deformation parts 42 and 42.