The utility model discloses a mountain landslide monitoring devices belongs to the landslide, collapses, mud -rock flow monitoring technology field. The device includes: comprises a solar cell pane, open -air monitoring devices and indoor system, wherein open -air monitoring devices includes charge controller, the battery, the wild field data terminal, crack displacement sensor and wireless transmission module piece, charge controller is connected with the solar cell panel electricity, the battery respectively with charge controller, wild field data terminal electricity is connected, crack displacement sensor sends the crack displacement to the wild field data terminal through electric signal connection, wireless transmission module piece is given through electric signal connection with data transfer in the wild field data terminal, indoor system receives information through wireless transmission module piece. The utility model discloses simple structure, simple to operate, the maintenance cost is low, and level sensor, angular transducer, crack displacement sensor carry out real -time stereoscopic monitoring from many aspects to the disaster, have saved a large amount of manpower and materials, have mastered disaster development comprehensively.