The invention provides an institution named entity normalization method and system based on an LEAM model, and the method comprises the steps: S1, screening all academic institution information data through a preset statistical rule, and removing data which does not accord with a preset condition; S2, in the screened data, removing noise existing in the data according to a regular expression; S3,dividing the denoised data into a training set, a verification set and a test set according to categories and a preset proportion; S4, inputting the training set and the verification set into an LEAMmodel, and training a model for institution named entity normalization; and S5, inputting the test set into the trained model, testing the effect of the model, and performing fine adjustment. According to the method, the paper publication number of each academic institution can be counted, so that the academic ability of a certain academic institution can be judged more scientifically and visually.