The structural design of miniature ball bearing is crucial to improving heat dissipation. Through reasonable structural design, the conduction and dissipation of heat can be effectively promoted, thereby improving the heat dissipation effect of the bearing and ensuring its stability and reliability during high-speed operation. The structural design of the inner and outer rings of miniature ball bearings should take heat dissipation needs into consideration. The thin-walled structure design can increase the surface area inside the bearing and improve heat dissipation efficiency. At the same time, the gap between the inner and outer rings should be reasonably designed so that heat can be conducted to the external environment faster. Secondly, the design of the bearing cage is also the key to the heat dissipation effect. The structural design of the cage should minimize the obstruction to heat and improve the efficiency of heat conduction and dissipation. The use of an open cage design and the addition of heat dissipation channels can effectively promote heat dissipation and improve the bearing's heat dissipation effect. The design of the bearing housing should also take heat dissipation needs into consideration. Adopting a shell structure with good heat dissipation design, such as a design with heat sinks or heat dissipation holes, can increase the heat exchange area between the bearing and the external environment and improve heat dissipation efficiency. Moreover, the installation position and layout of the bearings will also affect the heat dissipation effect. Reasonably choose the installation position of the bearing to ensure that the heat exchange channels between it and other heat dissipation equipment (such as fans, heat sinks, etc.) are smooth, which will help improve the heat dissipation effect of the bearing.