This work has the goal to provide a risk management procedure in order to improve fire protection of Valuable Contents in Historical Heritage Buildings. The core of the procedure is structured in two parts: Risk Assessment and Risk Treatment. In Risk Assessment phase, by means of a risk analysis and evaluation method, we want to point out which are the weak points in contents' protection due both to building features and to management strategies. In Risk Treatment phase is proposed a method to choose the best set of mitigation measures to reduce risk for Valuable Contents. The procedure suggests to the user sets of coherent actions to reduce specific risks by means of managerial strategies and interventions on the building. The procedure could be useful for insurance risk managers, fire engineers and managers of historical buildings that have responsibility for the Valuable Contents.