The writer has investigated about the geographical development of leather manufacturing industry in Tokyo, and some problems for the continuation of the manufacturing districts. The following facts are disclosed. About half of leather manufacturing plants in Japan are concentrated in Tokyo, most of these factories are of a small scale employing less than 10 persons, depending on their manual labour. About 69% of these factories are concentrated in Kinegawa district (in Sumida ward, ) situated in Western side of the Arakawa drain, and 30% are in Mikawashima district (in Arakawa ward, ) western side of the Sumida river. All of these factories are organized with wholesalars which are concentrated in Asakusa (old leather manufacturing center) at apex, for most of the factories are separated from the market. In Edo era, leather manufacturing district was at Nihonbashi, being supported by the Shorgnate. Before long, the manufacturing center removed to Kanda. The old leather manufacturing was destroyed at the beginning of Meizi era, and the modern leather industry was developed in accordance with the increase of militaly use, and the manufacturing district was removed by two steps…first was Kanda to Asakusa, and second was Asakusa to Kinegawa and Arakawa. In order to subsist these two concentrated districts, there are many disadvantageous condition for leather manufacturing industry now, as shortage of water, restricted manufacturing site, insufficient labour, and foul smell giving troble to circumference. In spite of these conditions, they never removed, the reason why they subsist in these two districts are are as follow: 1. The shortage of funds for removement. 2. It is impossible for the factories to remove from the organization centering wholesalor. 3. There is no firm factor which expels them from thesed dstricts.