The invention provides a suspended surface structure for laser selective melting forming. The suspended surface structure for laser selective melting forming comprises a suspended surface, a part witha structure characteristic of the suspended surface, plate-shaped supports added to the suspended surface, a chamfer of each plate-shaped support in contact with the suspended surface, and a fillet of each plate-shaped support connected with a substrate. A scraper used in the laser selective melting forming process forms an angle of 45 degrees with the length direction of the strip-shaped supports; furthermore, an included angle between the suspended surface and the horizontal plane is between 0-45 degrees; the plate-shaped supports are added at the suspended surface, the thickness of each plate-shaped support is 2 mm, and the center distance between the plate-shaped supports is 6 mm; an included angle alpha between the inclined edge and the vertical direction of the plate-shaped supportsand the joint of the suspended surface is less than 45 degrees, and the fillet at the joint of each plate-shaped support and the substrate; and no gap exists between the chamfers of the plate-shapedsupports. According to the suspended surface structure for laser selective melting forming, complete self-support of the suspended surface is achieved, and the defects of cracking, collapse and the like of the suspended surface in the laser selective melting forming process are avoided.