生物學的互利共生，探討兩生物體生活在一起的交互作用，互利共生雙方成員都得到好處，維持持續性的關係。由於環境不斷在變動，使得兩生物體必須共同學會適應環境，持續共生行為。設計服務產業中的供應商及市場上顧客，有如互利共生的雙方，而服務產業的變遷及新科技的注入，為這個環境加入許多不確定性。設計團隊如何利用服務科學之觀點從顧客角度建立互利共生之設計流程，遠瞻市場脈動和顧客建立長久的關係，是本研究要探討的議題。近幾年來工業設計逐漸浮出檯面。箇中翹楚，莫過於「手機設計」。過去通話是手機最基本的功能。現在，因為功能的跨界設計，讓手機不再只是一個移動式的話筒。本研究從設計的流程切入，探究工業設計團隊在初期進行創意構思到概念構成，及最後設計商品化的部分，如何使用互利共生與服務科學原則建立相關分析模型進行設計流程有效管理，使得設計師更瞭解市場和消費者的需求，並以消費者為尊的觀念，讓客製化的程度提高，建立一使得顧客與設計團隊間的交互作用得以持續。 / In service exchange, both providers and customers are involved in shaping the continuum of value co-production. Inspired by the symbiosis concepts, service exchange engaged by providers and customers can be regarded as the unfolding of mutually beneficial interactions between two species. The providers and customers in design service industry (e.g., industrial design) are the analogy as two organisms in mutualism. In this industry, there are many uncertain factors to consider and it is important for a design team to establish a mutualism relationship with their customers and unfold a design service process which can meet consumers’ expectations. This paper takes the design service of mobile phones as an example and presents an analytical model of mutualism-based idea management characterized with the principles of symbiosis concepts and service science. The model is unfolded with three symbiosis analytic tasks (concept definition, idea visualization, and commercialization) and achieves a design service process regarding the points of view of the customers in order to improve customization.