A one-piece support stand is provided for slantingly supporting an object on a work surface, and the support stand includes a central folding line for dividing the support stand into a left support panel and a right support panel interconnected with each other, and each of the support panels being substantially in a triangular shape and having a bottom edge and a bevel edge, and an inverted hook portion being formed at an intersection of the bottom edge and the bevel edge and bent towards the bevel edge, wherein the support stand is erected on the work surface by means of setting an included angle between the two bottom edges, and the two bevel edges and the two inverted hook portions being provided for supporting the object. The support stand features of a firm support, a foldable design, a convenient carry, a simple manufacturing procedure and a low manufacturing cost.