Abstract: In order to improve the measurement deficiency of existing weighing equipment and increase its measurement precision of weighing parameters such as barycentre and buoyancy center, this paper presents a new type of weighing equipment and its measurement method for various weighing parameters, analyzes and obtains the influence of the sys-tem error on the measurement errors of various weighing parameters. This equipment can improve the deficiency, pro-vide convenient measurement for various weighing parameters in torpedo development and production, and significantly increase the measurement precision. In addition, the proposed measurement method is also applicable to other objects with irregular shape.