The invention discloses a remote monitoring system for a mountain disaster in a scenic region. The system is composed of a vibration monitoring unit, a data acquisition unit, a field alarm unit and a control center unit. The vibration monitoring unit consists of a plurality of fiber grating sensors connected successively by fibers; and a broadband light source is arranged at one end of the vibration monitoring unit and the data acquisition unit is connected to the other end of the vibration monitoring unit by a fiber. The data acquisition unit, the control center unit, and the field alarm unit are connected successively. The vibration monitoring unit winds around a mountain. In addition, the invention also provides a remote monitoring method for a mountain disaster in a scenic region; and vibration situations of all areas of the mountain are monitored by using a fiber sensing technology. According to the invention, the system has a simple structure. Omnibearing monitoring can be carried out on disasters like landslide and rockfall; tourists at the disaster occurrence areas or at the foot of the mountain can be warned; and thus the tourists can take measures in advance to deal with the disasters like the rock fall, so that the casualties can be reduced.