The invention relates to a preparation method of a carbon fiber-reinforced and high-carrying capacity sulfur electrode, and belongs to the technical field of electrode material preparation. The methodcomprises the following steps of dissolving a binding agent in a solvent, and performing uniform stirring for use; dispersing a carbon fiber material in an acetone solution, processing for 12 hours at a temperature of 40 DEG C, and taking out, cleaning and drying the product for use; mixing a sulfur positive electrode material, Super P, the carbon fiber and a binding agent solution, and performing stirring for 8 hours; and uniformly coating paste on a current collector by a scraper method, and performing drying after coating, thereby obtaining the electrode, wherein the coating thickness is 1,000-3,000 micrometers. The method has the advantages that the method of directly adding the carbon fiber into the paste is employed, the process is simple and easy to implement, and mass production can be achieved; and since the carbon fiber has relatively high Young modulus and is not dissolved and expanded in water and an organic solvent, the breakage of the material during the drying process of the electrode can be effectively prevented, and preparation of the positive electrode with high sulfur-carrying capacity can be achieved.