Abstract：This paper introduces the clinical experience of Professor ZHANG Zhenzhong treating senile insomnia from the heart and kidney. Professor ZHANG Zhenzhong holds that insomnia in the elderly is closely related to the functional decline of viscera，and the deficiency of the five viscera is the basis for its occurrence，with the heart and kidney being particularly prominent. Clinical manifestations are usually the syndrome of deficiency- excess complex and the syndrome of the root being in deficiency and the branch being in excess. The differentiation and treatment of senile insomnia should be in line with their constitution characteristics， treat both root and branch， pay attention to the heart and kidney， and consider other factors in order to achieve effective results.