Abstract: Existing lunar constellation designs consider communication and navigation functions separately, failing to effectively utilize integrated communication-navigation technologies to reduce the overall cost of constellation design. A novel method for designing lunar constellations based on recurrent orbit was proposed, utilizing a multi-objective optimization framework that concurrently evaluates coverage multiplicity, communication performance, and navigation accuracy constraints through a non-dominated sorting genetic algorithm. The optimization results show that, with 12 lunar recurrent satellites, an average Positioning Dilution of Precision (PDOP) of less than 7 across the entire lunar surface and full-time triple coverage in mid-to-high latitudes can be achieved. The proposed scheme can provide high-speed communication and high-precision positioning and navigation services that are both cost-effective and technologically advantageous for future lunar exploration activities, while demonstrating the potential of integrated communication-navigation technologies in reducing system costs.