An optical pickup device featuring reduced number of components and improved workability for achieving cost reduction and improved product quality. A base stand (4) is provided with a first guide section (8) and a second guide section (9) which stand upright from the base stand individually and can slidably engage with the first and second engagement portions (11, 12) provided on a mount base (3), respectively. This arrangement permits the base stand (4) having the guide sections (8,9) fixed thereon to be assembled directrly with the mount base (3) including an optical pickup thereon, resulting in simplified assembly operation and enhanced operation efficiency. Further, integral forming of the base stand (4) together with the first guide section (8) and the second guide section (9) into one body enables it to reduce the number of components, cut the production costs and improve the product quality