This study describes social networks in the home industry of kareh-kareh cakes in Nagari Koto Laweh, X Koto District. The purpose of this study was to find out the form of the social network of the kareh-kareh household industry and how the social network functions in developing its business. Research using descriptive qualitative method. There were 10 informants, 6 of whom were supporting informants. Determination of informants using purposive sampling technique. Data collection techniques are by observation, interviews, and documentation. The theory used is the social network concept of Granovetter. The research results are as follows; The form of network that is created is that entrepreneurs have a micro social network, namely with fellow entrepreneurs, sellers of raw materials, cake craftsmen, and customers; meso networks of business actors, namely with the government, the Kharisma and Meekar capital groups, as well as with other parties such as universities and promotions on social media. There are norms and network density as well as efforts to maintain trust between actors so as to create a strong network. The function of the social network contained in the kareh-kareh cake home industry is as a lubricant, adhesive and bridge.