Aiming at the environmental differences and plant adaptability problems in the ex situ conservation of rare and endangered plants, this paper proposes a framework for ex situ conservation of plants constructed using BeiDou's high-precision spatiotemporal technology. The framework is based on precision agriculture technology and parallel system theory. Through the construction of artificial ecosystems and parallel planting, the problem of differences between ex situ conservation and the natural ecological environment, as well as the adaptability of natural return of plants, is solved. The framework proposed in this paper is conducive to improving the success rate of ex situ conservation, thereby enhancing the benefits of ex situ conservation of rare and endangered plants.