This paper is devoted to study the uniqueness and existence of mild solutions for impulsive semilinear differential equations, we assume that the linear part generates a strongly continuous semigroup on a general Banach space in a Banachspace. The arguments are based upon Banach's, Mönch's and Darbo's fixed point theorems and the technique of measure of noncompactness. Finally, an illustrative example is given to illustrate the results.