This paper includes listed companies in the overall framework of business groups and selects A-share listed companies from 2011—2019 as a sample to verify the impact and mechanism of business group control on the cost stickiness of listed companies, and explore the impact of other internal and external factors. The results show that compared with independent listed companies, business group control, especially non-state-owned business group control, can reduce the cost stickiness of listed companies; business group control reduce the cost stickiness of listed companies by lowering their adjustment costs and alleviating their agency problems; the more listed companies controlled by business group, the better it is to reduce the cost stickiness of listed companies; the more related the business of listed companies and the group parent company, the better it is to reduce their cost stickiness; in industries with low product competition and regions with low marketization, business group control is more beneficial to reduce the cost stickiness of listed companies.