Management economics, as a branch of economics, helps businesses and individuals systematically and logically formulate plans and decisions, and its application in management practice makes an indispensable contribution to society. This article takes Apple and Huawei as examples, and based on existing literature, analyzes the application of management economics theory in enterprise marketing management through case analysis and data analysis. This article finds that both Apple and Huawei cleverly and flexibly apply the four core theories of management economics. As excellent enterprises, both brands actively explore the potential needs of customers and help them seize the market faster. Apple actively collects user feedback, responds to and solves user issues and opinions in a timely manner, which helps them better understand consumer needs and expectations. Huawei has always been committed to deeply understanding customer needs. The results indicate that each company has its own unique operational approach, but it is worth noting that companies that want to succeed should start with organizational structure, optimize personnel management, clarify market goals, upgrade products targeted, capture customer groups, and establish good communication; All of these are key factors for the sustainable development of the company.