Objective　This　paper　explores　understory　seedlings　of　different　provenances　of　Machilus　pauhoi　and　their　response　to　geographical　environment　changes　with　the　intention　of　providing　theoretical　and　practical　basis　for　artificial　reforestation　of　natural　forest　and　selection　of　suitable　cultivation　environment　selection.MethodLeaf　samples　were　collected　from　understory　seedlings　of　9　provenances　of　M.　pauhoi　and　variations　of　leaf　C,　N,　P　stoichiometry　of　different　provenances　were　analyzed　by　one-way　ANOVA　and　the　correlations　were　calculated　using　Pearson　method.　Representative　environmental　factors　were　selected　by　combining　both　entropy-weight　method　and　redundancy　analysis　method.　Based　on　stepwise　regression,　fitting　models　of　leaf　stoichiometry　and　environmental　factors　were　established.　Using　akaike　information　criterion,　the　best　fitting　models　were　chosen　to　analyze　the　influence　of　environmental　factors　on　leaf　stoichiometry　of　M.　pauhoi　understory　seedlings.　Result　Firstly,　leaf　P　concentrations,　C:P　and　N:P　of　M.　pauhoi　understory　seedlings　of　different　provenances　presented　extremely　significant　differences　(P　©　2018,　Editorial　Department　of　Scientia　Silvae　Sinicae.　All　right　reserved.