Abstract: Scientific and reasonable evaluation of meteorological disaster loss has important significance for decisions of disaster reduction and relief. A universal and general model of projection pursuit regression (PPR) is proposed with the matrix for the evaluations of different meteorological disaster systems, on the basis of gauge transformation for disaster loss indexes. Because of the "equivalence" of each normalized index, only models of NV-PPR (2) and NV-PPR (3) are necessary for the normalized index values (NV) of 2 indices and 3 indices of meteorological disaster system. Furthermore, the NV-PPR modeling for over 3 indexes of meteorological disaster system could be represented by the combinations of some NV-PPR (2) and (or) NV-PPR (3) models. Models are applied to the evaluations of typhoon disaster loss in Guangdong and 2 lightning disasters loss in Chongqing, and evaluation results of this method are compared with those of other methods. It shows that the evaluation model (NV-PPR) of meteorological disaster loss with gauged transformation based on projection pursuit regression is independent of index numbers, with features of simplicity and utility. The model can also be extended and apply to other disaster loss assessment systems.