The invention provides a folding type directional antenna device for a satellite. A supporting base can be mounted to the mounting portion of a satellite body; a pitch rotating mechanism is connectedwith the supporting base and is connected with an azimuth rotating mechanism; the azimuth rotating mechanism is connected with an antenna assembly; a restraining device is connected with the antenna assembly; the antenna assembly cannot rotate on the azimuth rotating mechanism when being restrained by the restraining device; and the antenna assembly can be folded relative to the supporting base bymeans of the pitch rotating mechanism; when the restraining device is released, the pitch rotating mechanism can rotate relatively, the azimuth rotating mechanism can rotate relatively, and the rotation axis of the pitch rotating mechanism is perpendicular to the rotation axis of the azimuth rotating mechanism; and the antenna assembly can rotate to realize orientation in different directions through the azimuth rotating mechanism and the pitch rotating mechanism. In a limited satellite installation and use space, the installation of the antenna can be realized, the antenna is far away from the satellite body after the antenna is unfolded, so that the influence of the satellite body can be decreased, and a two-dimensional rotation orientation function can be realized.