The problems of the conservation of monuments of architecture of XIX century - the Church of the Holy Apostles Peter and Paul in the city of Sevastopol are discussed in the article. The analysis of results of the inspection has been done and recommendations to strengthen the supporting structures of the church are worked out.It is necessary in the level of the top edge of the bases around the perimeter of the building to arrange reinforced concrete belt which is cross-linked for safe operation of the temple of the Holy Apostles Peter and Paul. Exterior walls should be strengthened by concrete sided shirt. Overlap balconies, masonry parapets and gables it is necessary to strengthen with the help of tabulation system of steel beams. Analysis of the survey results of the temple and the proposed measures to strengthen the supporting structures allow performing repair and restoration work without breaking the historical reliability of the facades.