A shock wave generating device includes an optical fiber and a reflective part, and is configured to reflect and converge the shock wave generated inside the reflective part to an outside of the reflective part. The reflective part includes: a reflector having a concave surface having a cut surface-of-revolution shape, and a through hole, which is formed coaxially with a rotating axis of the concave surface, and into which the optical fiber is to be inserted; a sealing body configured to seal an opening portion of the concave surface; and a liquid to be charged between the concave surface and the sealing body. The optical fiber has a distal end arranged at a position on a rear side of a focal point of the concave surface, at which the shock wave reflected by the concave surface is convergeable outside the reflective part.