This study referred the activity of historic parks conservation and renovation by the English Heritage, and got hold of some instructive findings to protect historic parks to the future in Japan. It was the presupposition that the understanding the framework of conservation and renovation of historic parks as a heritage at national level, the result of historic parks registration and grading, and the register criteria and registration process. As a result, it was confirmed some suggestions as follows; i) the comprehensive system for historic parks conservation and renovation in association with national government, local authorities and private charities have been established; ii) the registration activities closely links to the policy making and development control in city planning; iii) the English Heritage has prepared broad and various register criteria and is now challenging to increase the number of the Registration of historic parks to the future; iv) the registration is made possible if it is restored to a former condition; and so on. Above all, it was discussed that we need to establish the registration system of historic parks through expanding existing registration system of tangible cultural properties in Japan.