A mounting apparatus for expansion card comprising a chassis, a mounting frame secured to the chassis and located in a first portion of the chassis, a hull secured to the chassis and located in a second portion of the chassis opposite to the first portion, and a mounting member. The mounting member comprises an elastically deformable latching portion. The hull comprises two limiting portions and defines a positioning opening, and the mounting member is engaged in the two limiting portions and is slidable relative to the hull. The mounting member is slid to a side edge of the hull towards to the mounting frame when the elastically deformable latching portion is engaged in the positioning opening.