DASPKADJOINT, for sensitivity computation of difierential-algebraic equations (DAEs) by the adjoint method, is introduced and described. Several critical issues for the implementation are addressed. DASPKADJOINT is more e-cient than the forward method implemented in DASPK3.0 for applications with a large number of sensitivity parameters and few objective functions. Numerical examples are given to illustrate the simple and efiectiveuse of the software.