As a typical form of new quality productivity, low-altitude economy is characterized by high dependence on science and technology, flexible flight service and multiple application scenarios. Developing low-altitude economy is an important fulcrum of cultivating new quality productivity and has important strategic significance. The high-quality development of China’s low-altitude economy is faced with difficulties such as insufficient motivation for market players to participate, low degree of scientific and technological innovation and energy utilization, and large regional development gap. The reasons for the legal system are related to the fragmentation of the legal incentive system for low-altitude economic development and the inefficient application of legal incentive tools. In order to solve this dilemma, it is suggested to construct a legal incentive system for the high-quality development of low-altitude economy. We should set goals that balance economic efficiency with social equity, industrial promotion with low-altitude safety, and equitable encouragement of innovation with protection of rights and interests. Secondly, we should build a low-altitude economic legal incentive system with systemic thinking, clarify the management principles of low-altitude economic industries through high-level legislation, set low-altitude industry promotion norms based on local differentiated resource endowments, and clarify the ways in which the government restrains intervention in the low-altitude economic market. Finally, it is necessary to comprehensively use legal incentive tools to develop low-altitude economy, incorporate the classification and application of legal incentive tools into the low-altitude economic promotion law, and flexibly apply the right-granting, cost-reducing and efficiency, qualification and reputation, risk prevention and control legal incentive tools for different types of low-altitude economic industries.