The implementation of carbon Cap-and-Trade mechanisms has driven supply chains to pay long-term attention to low-carbon production and propaganda. In response to this demand, the energy-saving service industry has derived a dual carbon service contract model. In order to analyze the impact of the model on the selection and dynamic coordination of supply chain emission reduction strategies, the independent reduction, project contract, and shareholding cooperation strategy models are constructed. The study finds that choice of dual carbon service contract mainly depends on the cost advantage of Energy Service Company (ESCO). This condition is related to goodwill decay rate, discount rate, and consumers" low-carbon preference. When manufacturers choose the dual carbon service contract, retailers may reduce their promotional efforts and gain additional profits. Shareholding cooperation can reduce the cost requirement. The increase of the shareholding can increase supply chain emission reduction investment and achieve Pareto improvement in profits for manufacturers and retailers. Low profit optimization brought by shareholding cooperation for ESCO, and manufacturers can facilitate it through transfer payments. The research focuses on a new model in the energy-saving service industry, providing reference for the selection of supply chain emission reduction strategies.