The invention relates to a high-performance fabric special for weapon equipment and a preparation method thereof and belongs to the technical field of textile fabrics. The preparation method of the fabric comprises the following steps that functional yarns are woven to obtain a gray fabric, and bleaching treatment is conducted on the gray fabric to obtain a bleached gray fabric; bleaching treatment is conducted on the gray fabric to obtain a bleached gray fabric; primary washing is conducted on the bleached gray fabric to obtain a primary washed gray fabric; antibacterial treatment is conducted on the primary washed gray fabric to obtain an antibacterial gray fabric; secondary washing is conducted on the antibacterial gray fabric to obtain a secondary washed gray fabric; anti-static treatment is conducted on the secondary washed gray fabric to obtain an anti-static gray fabric; tertiary washing is conducted on the anti-static gray fabric to obtain a tertiary washing gray fabric; the obtained tertiary washing gray fabric is sequentially subjected to hydrophilic and oleophylic treatment, dyeing, four times of washing and shaping and drying to obtain the high-performance fabric special for weapon equipment. The fabric is safe and environmentally friendly, is free of batting, has excellent elasticity and flexibility, has antibacterial mildew resistance and can rapidly and efficiently absorb moisture and oil contaminations.