本文以CMES的调查数据为基础，研究了关系对小微企业创新的影响，并从社会资本的角度解释了其中的机制问题。实证结果表明，以最主要所有者过去的就业经历、行业协会关系、招待费所衡量的关系提高了小微企业的创新活力与创新效率；其次，关系通过帮助小微企业获得资金支持、市场支持、政府支持以及更多的政策信息提高了创新活力与创新效率，证实了社会资本的解释，而技术支持并未产生明显影响。

Based on CMES data, this paper investigates the effect of relationship on the innovation of small and micro enterprises, and explains the mechanism from the perspective of social capital. The empirical results show that the relationship measured by working experience of the most principal owner, the membership of industrial associations, and expenditures for entertaining others due to benefits, promotes innovation vitality and innovation efficiency of small and micro enterprises; secondly, the relationship helps small and micro enterprises to obtain financial support, market support, government support and more policy information to improve innovation vitality and innovation efficiency, which confirms the interpretation of social capital, however, technical support have no significant effect on the innovation.