The invention provides a method for self-controlling pinus massoniana forest bursaphelenchus xylophilus(steiner et bahrer)nickle by means of Cedrus deodara (Roxb .)G.Don, and belongs to the technicalfield of forestry pest control. According to the control method, by reasonably mixing screened special chemical type cedrus deodara (Roxb.)G.Don in a pinus massoniana forest, a mixed forest is formed.Due to the fact that the chemical type cedrus deodara (Roxb.)G.Don is reasonable in distribution in the pinus massoniana forest, monochamus alternatus in the forest can be strongly attracted to eat and lay eggs, most of the monochamus alternatus is attracted to the cedrus deodara (Roxb.)G.Don for laying eggs, after the monochamus alternatus eggs are just hatched, the monochamus alternatus can eatthe cedar phloem, the monochamus alternatus after eating cannot survive, but the growth of the cedrus deodara (Roxb.)G.Don is not affected, the cedrus deodara (Roxb.)G.Don can still attract the monochamus alternatus to eat and lay eggs for a long time. Repeatedly, the number of monochamus alternatus in the pinus massoniana forest can be self-controlled for a long time, propagation of the bursaphelenchus xylophilus(steiner et bahrer)nickle is delayed and blocked, and the purpose of controlling the pinus massoniana forest bursaphelenchus xylophilus(steiner et bahrer)nickle is achieved. Accordingly, the method has the advantages of being good in effect, low in cost, simple and easy to operate, and is worthy of large-scale popularization.