To　reduce　a　mass　of　calculations　with　solving　multiple　constraints　for　nonlinear　programming,　the　nonlinear　programming　was　transformed　into　single　constraint　condition　by　K-S　function　in　this　paper.　The　saddle　point　conditions　were　obtained　by　Lagrange　multiplier　method　of　the　equality　constraint.　By　using　Taylor　formula,　we　got　an　approximate　equation　to　solve　the　nonlinear　programming.　The　iterative　results　of　numerical　examples　show　that　the　method　has　a　value　for　applications.