The aim of the study was to clarify the situation of vegetation recovery on landslide slope in Tanzawa Mountains, Kanagawa prefecture. The landslide surface conditions, tree species and condition of their growth in four landslide sites were investigated. The study results are as follows. A large number of invaded trees are growing on uneven landslide surface. On landslide slope in broad leaved forest more trees can invade than in conifer forest. Small trees may grow easily close to bigger trees. On the periphery of the landslide area, many trees are growing because of rather stable surface soil. Trees can grow on the crack of bed rock without soil layer. On the bare soil surface and smooth bed rock, trees can not invade. On the bottom area and unstable area surface, trees can not also invade and grow.