The invention discloses a hoop clamp for power transmission and transformation equipment and a manufacturing method thereof. The hoop clamp is made of pure copper, is molded by stamping and hot-rolling processes, needs no subsequent heat treatment process, and can be directly air-cooled. The hoop clamp has the advantages of uniform composition, compact structure, no casting defects, controllable manufacturing cost, and no tendency to stress cracking. The conductivity of the hoop clamp can be up to more than 97% ICAS. The hoop clamp has stronger current-carrying capacity than a traditional cast brass hoop clamp under the same specification and size conditions, and has excellent mechanical properties. The tensile strength can be up to 180-200MPa, which is better than that of an ordinary cast brass hoop clamp. Nondestructive test can be carried out on the hoop clamp on site, and detection is convenient. Through conductivity test, hardness detection and size measurement, the quality of the hoop clamp can be controlled.