In design action, we can see remarkable conduct as a client and as a specialist. Such conduct is quite different from the other daily communication, and is characteristic in comparison between the client' and the specialist situated actions. Ethno-design-method can be found as the sequential construction of conversations, and has a close relation to the contents and results of housing environment design. This paper aims to describe the ethno-design-methods which are found in the relationship between "being the orderer" and "being the designer" in design action by analysis of conversations between the orderer and the designer. The ethno-design-methods as collaborative practice consist of (a) collecting and arranging information (b) interrupting except the end of utterance and (c) suggesting the idea like a question and evaluating the reply to the idea.