Social capital plays a positive role on corporate business performance and business capacity. The paper utilizes corporate social capital theory to discuss marketing channels of sports goods industry, establishes an influence model of corporate social capital for marketing channels of sports goods industry, and elaborates influences of marketing channel design, channel conflict resolution and channel performance management from three aspects, including structure dimension, relational dimension, and cognitive dimension of corporate social capital. Based on analyzing these influence factors, the paper proposes a countermeasure of utilizing network structure and common belief to expand marketing channels and optimize marketing network; using trust, normative mechanism and system to solve channel conflicts; and making use of trust, cooperation, reciprocal norms and external social network to improve market performance.