The invention provides a preparation method of a multifunctional stone-paper-based flowerpot, which comprises: 1# master batch of the raw material for the slow-release thermal insulation layer, 2# master batch of the raw material of the functional layer, 3# master batch of the raw material of the controlled release layer, and a multi-functional Preparation of stone-paper-based flowerpot body and flowerpot. It can not only be used for plant planting, cultivation, packaging and transportation, but also can provide nitrogen, phosphorus, potassium and other nutrients required for plant growth, provide temperature and moisture required for plant growth, control the diffusion of nutrients, slow release nutrients, make Plants obtain water and nutrients in the process of planting, cultivation, packaging, transportation, etc., and at the same time can effectively protect plants from external damage, plus the anti-oxidation and anti-ultraviolet effect of the outer layer, prolong the service life of the flowerpot, so that the flowerpot has High aesthetic performance provides a good growth environment for plant planting, cultivation, packaging and transportation.