The invention provides a portable dust preventive lifting platform for a UAV (unmanned aerial vehicle) in a mountainous region. The portable dust preventive lifting platform for the UAV in the mountainous region comprises a platform body, fixing nails, a level, a heightening device, an upper part of a supporting leg, a lower part of a supporting leg, a folding device and a landing mark; the platform body is connected with the upper part of the supporting leg through the folding device; the upper part of the supporting leg is fixedly connected with the lower part of the supporting leg through the heightening device; the upper part of the supporting leg and the lower part of the supporting leg are in threaded connection with the heightening device; threads which are formed in the upper part of the supporting leg to connect the heightening device are in direction opposite to the threads which are formed in the lower part of the supporting leg to connect the heightening device; the lower part of the supporting leg is fixed on the ground through the fixing nails; the landing mark is arranged on the platform body; the level is mounted on the platform body; when the UAV performs aerial photographing for the mountainous region, a lifting platform can be built for the UAV, so that the UAV can safely land and dust caused by the UAV landing and taking off can be avoided, and as a result, the double-protection effect for the UAV is achieved; an operator of the UAV can conveniently accurately operate and control the UAV to land; the platform can be folded and is convenient to carry.