Absorbing the idea of the reference [ 3 ] and based on paper [ 2 ] , the approximation theories of the global and pointwise of r + s order derivatives are obtained in the first part ; in the second part , the inequality of stechkin - marchaud type of generalized baskakov is studied 第一节吸收[ 3 ]的思想，在[ 2 ]的基础上得到了广义baskakov算子r + s阶导数的点态和整体的逼近定理；第二节研究了广义baskakov算子的stechkin ? marchaud型不等式。
