The complexity and circuitiousness of Japan's market has often been pointed to by American people as one trade and international friction between Japan and the US. They have claimed that the length of Japan's marketing channels prevents the US products from selling as much in comparison with the US. Are their opinions really true? Therefore, taking this problem into consideration, I would like to verify marketing channels of Japan and the US in this research. In other words, the main purpose of this study is to clarify these marketing channels by measuring the length of marketing channels and the number of wholesale stages from empirical data in Japan and the US.