There is no doubt that interaction design has become a key approach to service design in the mobile internet era. Behind the scenes, the common concerns of behavior can profoundly reveal the relationship between interaction design and service design. To illustratethis point, this article will divide the behavior of interaction design into two types and analyze their effect on service design, which can also bring some inspirations for the practical and theoretical study of service design on the mobile Internet.%在移动互联网时代下，交互设计成为了服务设计的实现方式。在这个表象之下，从对行为关注的角度入手分析能更深刻地揭示交互设计与服务设计之间的关系。将交互设计关注的行为分为两类，并分析各类行为对服务设计的作用，由此阐明交互设计是服务设计的关键路径，从而为移动互联网下的服务设计实践和理论研究提供启发和切入点。
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