A wavelength conversion laser is provided with a fundamental wave laser light source (1) for emitting fundamental waves, and a wavelength conversion element (10) for converting the fundamental waves emitted from the fundamental wave laser light source (1) into converted waves each of which has a wavelength different from that of the fundamental wave. At least one of a pair fundamental wave reflecting surfaces (12, 13), which are positioned on the both end sides in the optical axis direction of the wavelength conversion element (10) and pass through the fundamental waves a plurality of times in the wavelength conversion element (10), passes through the conversion waves, and the pair of fundamental wave reflecting surfaces (12, 13) make the fundamental waves intersect in the wavelength conversion element (10), and a plurality of light collecting points are formed at points different from the intersecting point of the fundamental waves. Thus, the wavelength conversion laser is permitted to have high conversion efficiency and reduced dimensions.