The invention discloses an entity recognition model training method and device, computer equipment and a storage medium, and the method comprises the steps: firstly obtaining a sample data set, enabling each piece of sample data in the sample data set to comprise N pieces of labeling data, and enabling N to be a positive integer; according to the sample data set, training a preset multi-layer recognition model to obtain an entity recognition model, wherein the multi-layer recognition model comprises a main model and N entity sub-models, and each piece of annotation data of each piece of sampledata corresponds to one entity sub-model. According to the method, a plurality of annotation data are set in the sample data, and when the multi-layer recognition model is trained, the network structure of the main model and the N entity sub-models is set, so that the memory consumption during training can be reduced. Moreover, N pieces of annotation data are set for one piece of sample data, sothat the recognition precision of the model can be better ensured on the premise of not reducing the number of the sample data. The invention further discloses an entity identification method and device, computer equipment and a storage medium.