Wireless sensor networks（ WSNs） is applied to landslide monitoring

observe slope movement by monitoring location of sensor nodes and predict occurrence of landslides. Aiming at problem of low precision of traditional localization algorithm for slope node localization

an improved RSSI-based weighted centroid localization algorithm is put forward

which considers external environment that the slope nodes belong to

error coefficient of anchor node is introduced to adjust RSSI ranging in real-time

and at the same time

conception of environmental factors of anchor node is introduced

quotient between environmental factors and corrected distance is used as weight to make the chosen of weight more reasonable

as a result

influence of external environment is reduced. Simulation results show that the algorithm improves positioning precision of the slope sensor nodes obviously.