A supporting assembly is disposed to a case of an electronic device. A window is formed on the case for communicating an inner surface and an outer surface of the case. The supporting assembly includes a fixed part, a latching post, and a support body. The fixed part is disposed to the inner surface. The latching post includes a fixing end and an inserting end. The fixing end runs through the window and is fixed to the fixed part. A first stopping block is disposed to the inserting end. The support body includes a supporting side and a combination side. A combination hole is formed at the combination side for the inserting end to insert therein. The support body further includes a second stopping block protrudly disposed in the combination hole, for stopping the first stopping block to prevent the inserting end from escaping from the combination hole.