Compared with traditional generation technology, photovoltaic generation, which is widely spread and easily connected to the grid, has an excellent ability of self-starting, making it a promising alternative of black-start sources. Given the difference between PV and traditional black-start sources, a two-phase network restoration strategy was presented. In phase 1, PV units are used to restart the first traditional unit within the network, with the objective to maximize the possibility of starting successfully. In phase 2, the one generator started in phase 1 is used as the main power source, while PV units as the auxiliary source, to finish the whole restoration procedure, with the objective to maximize the power generated and minimize the time needed during the restoration. Taking the objectives of the two phases into consideration, an integral optimization method was proposed, which could fix the disadvantages of PV systems such as low inertia and relatively poorer starting ability, while guaranteeing the restoration efficiency. The case study of IEEE 30-bus system has proved the practicability and the effectiveness of the method proposed.