针对双曲线回归常用两参数模型的不足 ,引入第三参数 ,建立了双曲线回归三参模型 .从理论上证明了其建模原理的可靠性及建模思想的合理性 ,并给出确定各参数的方法 ,以陆浑水库大坝沉降观测资料分析为例 ,通过对建立起的双曲线回归三参模型、双曲线回归常用模型及其它模型的成果对比分析 ,充分验证了该双曲线回归三参模型的实用性 . Aiming at the insufficiency of hyperbolic regression common two-parameter model, the third parameter is introduced and the hyperbolic regression tri-parametric model is established.It is theoretically proved that the modeling principle is reasonable and the modeling method is reasonable. This paper takes the observation data analysis of the dam settlement of Luhun Reservoir as an example. By contrasting and analyzing the established hyperbolic regression tri-parametric model, hyperbolic regression common model and other models, it is proved that the hyperbolic regression equation Practicality of the model.