The invention discloses a three-dimensional similar model test stand, which includes a rolling type multidirectional loading stand and limit rolling instruments. The rolling type multidirectional loading stand consists of a barrel-shape frame, a front baffle plate, a back baffle plate, a left baffle plate, a right baffle plate, a left loading unit, a right loading unit and a top loading unit. Thebarrel-shape frame includes a hollow housing with a cylindrical outer surface, the top surface, the front and the back of the housing are hollowed-out, the barrel-shape frame also includes a bottom plate, the bottom plate is installed at the bottom inside the housing, the front baffle plate is installed at the front of the housing, the back baffle plate is mounted at the back of the housing, the left baffle plate is installed on the left inside the housing, the right baffle plate is installed on the right inside the housing, the left loading unit is mounted between the housing and the left baffle plate, the right loading unit is mounted between the housing and the right baffle plate, and the top loading unit is used for loading at the top of the model. The limit rolling instruments are used for promoting the rolling type multidirectional loading stand to roll back and forth to set angle, and can stay at corresponding positions.