A sustainable tourism industry requires a stable tourist source market, which is assessed by the quality and the variety of tourism products. However, over-competitiveness diminishes its stability. In this case, the strategic planning becomes critical. The hot spring and Minshuku (homestay) industries in Japan have demonstrated steady increases over the past years. This is due to the addressing of advanced concepts and the perpetuation of the traditional cultures. The tourism resources in Taiwan are identical to those in Japan. Therefore, the strategic planning in hot spring and Minshuku (homestay) industries in Japan can provide valuable references.