Sustainable peace and its guarantee are the indisputable rights of citizens who are facing challenges in Afghanistan, and to overcome these challenges, legal solutions are needed that must be put into the form of policies with their implementation, so the people of this land will witness a peaceful life and sustainable peace. Therefore, in this research, sustainable peace is considered a right-claim, and to guarantee it, legal solutions and government policies have been analyzed and evaluated with a legal approach, philosophy of law, and sociology using library and field methods, as well as descriptive, analytical, inductive, and deductive research methods. The key legal solutions and policies to ensure sustainable peace in Afghanistan are respect and guarantee of human dignity, human security, equality of opportunity, and fair territorial planning, which the government should put at the top of its major policies. At the same time, the government should focus more on human dignity as the basis of human security, equality of opportunity, and fair territorial planning as the key to ensuring sustainable peace and place it as the axis of its strategy, policy, and major programs. This research focuses mainly on proving the relationship between the issues and ensuring sustainable peace.