中文摘要：

开放式创新背景下，外部知识搜寻成为创新领域的热点问题。针对已有研究对外部知识搜寻作用机理研究的不足和中国企业实证检验的缺失，从外部市场环境和内部创新策略两个层面探讨外部知识搜寻（宽度和深度）的作用边界和作用机理。采用问卷调研方法获取294家中国企业的数据，利用验证性因子分析方法检验测量量表信度和效度，采用层级调节回归分析方法验证各项研究假设。研究结果表明，搜寻渠道的种类（搜寻宽度）和对某类渠道搜寻的力度（搜寻深度）显著线性影响创新绩效，不存在明显的过度搜寻问题；外部知识搜寻与市场环境（竞争强度、动荡性）的匹配显著影响创新绩效，在竞争激烈的市场环境中加强搜寻宽度更加有效，在顾客需求和产品技术频繁变化的市场环境中加强搜寻深度更加有效；外部知识搜寻与创新策略的匹配显著影响创新绩效，搜寻深度与开发式创新交互正向影响创新绩效。

英文摘要：

Under the background of open innovation , external knowledge search has been the focus in the field of innovation . Considering the fact that few studies explore the influencing mechanism of external knowledge search and the lack of empirical tests for Chinese firms , this study investigates the boundary condition and the influencing mechanism of external knowledge search （ breadth and depth ） from external market environment and internal innovation strategy .In a questionnaire survey of 294 Chinese firms, this study employs confirmatory factor analysis to test the reliability and validity of the measurements , and adopts hierarchical moderated regression to examine the hypotheses .Results show that： ①both types of search channel （ search breadth） and the strength of search on the specific channel （search depth） exert significant linear effects on innovation perform-ance, which means there is no significant overly search problem;②the match of external knowledge search and market environ-ments （ competition intensity and market dynamism ） significantly affect innovation performance .In the market with fierce compe-titions, breadth search is more effective;in the more dynamic market that exists high varies of consumer demands and product technologies , depth search is more effective;and ③the match of external knowledge search and innovation strategy significantly influences innovation performance , and depth search and exploitative innovation interactively affect innovation performance .