Abstract: A two-phase immersion-type heat dissipation structure is provided. The two-phase immersion-type heat dissipation structure includes a heat dissipation substrate and a plurality of non-vertical fins. The heat dissipation substrate has a fin surface and a non-fin surface that face away from each other. The non-fin surface is configured to be in contact with a heating element immersed in a two-phase coolant. The fin surface is connected with the non-vertical fins, a cross-sectional contour of one of the non-vertical fins has a top end point and a bottom end point connected with the fin surface, and the top and bottom end points are opposite to each other. A length of a cross-sectional contour line defined from the top end point to the bottom end point is greater than a perpendicular line length of a perpendicular line defined from the top end point to the fin surface.