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In order to study the relationship between RFID tag implantation environment and Readers read distance,thereby predicting the maximum reading distance of the RFID tag implanted into the tire;the FEKO electromagnetic simulation software established many antennas with different conditions and the reflection coefficient S_11 is obtained, And then use the Frings transfer equation (Friis) to calculate the simulation read distance. In MATLAB, there are neural network toolboxes that can be called, and the BP neural network prediction model is established by using MATLAB's powerful data processing ability to establish the length of the tag antenna, the distance between the label and the wire layer in the tire, the tire dielectric constant and the simulation of the distance between the BP neural network model.;At last,The actual measured value and the predicted simulation value obtained after training can be regarded as the actual measurement distance within the allowable range of error;Therefore, the BP neural network model can be used to predict the reading distance of the reader within a certain precision range quickly and easily.