The invention relates to a vacuum vesicle thermal-insulation particle which is characterized by comprising a particle body. The particle body is formed by a tubular high-polymer material and is of a columnar vacuum supporting structure, and inorganic material particles, getters and drying agents are filled in the particle body. A preparation method of the vacuum vesicle thermal-insulation particle comprises preparation of filling core materials, preparation of vacuum separating film bags, preparation of inorganic particle filling pipes, truncation of the pipes and preparation of the vacuum vesicle particles. The vacuum vesicle thermal-insulation particle has the advantages that the vacuum vesicle particle is of the columnar structure, good supporting effects of pipe truncation can maintain structural stability and dimension unicity of the vacuum vesicle particle, and damage to a film layer caused by an internal inorganic material is avoided. The problem that the inorganic material is poor in water resistance is solved, the separating performance is good, weather resistance is strong, and enough vacuum degree and dryness in the structure can be maintained in the using process by adding the getters and the drying agents in internal inorganic fillers. The vacuum vesicle particle can be widely applied to internal filling of thermal-insulation materials of various morphological structures.