Abstract: Interplanting planting method is a common method of forest management technology in China, it can optimize the forest growth environment and is conducive to the biological role of forest land. In order to verify the impact of different planting treatments on interplanting of pinus massoniana, the experimental forest land was selected in a forest farm in China, and the interplanting management modes of interplanting sightseeing trees after thinning, direct interplanting sightseeing trees without thinning and non thinning and non interplanting are adopted for interplanting management. The ecological investigation of 7-year-old trees is carried out to compare the growth of young masson pine forests under different planting treatments, so as to study the growth effect of interplanting sightseeing trees in young masson pine forests.