针对天平多元校数据处理方法特点，给出了方向加速法和詹重禧法两种新的天平多元校拟合算法。并结合一台三分量铰链力矩天平多元校实例，对上述两种新拟合算法进行了分析比较，提出了一种天平多元校最优拟合算法。该算法收敛速度快，计算精度高，稳定性好，适应性强。 Aiming at the characteristics of balance multi-school data processing methods, two new balance multi-school fitting algorithms are proposed, such as directional acceleration method and Zhanzhongxi method. Combining with a three-component hinge-torque balance multi-cell example, the two new fitting algorithms mentioned above are analyzed and compared, and a balance multi-cell optimal fitting algorithm is proposed. The algorithm has the advantages of fast convergence, high precision, good stability and adaptability.