In order to improve the data transmission efficiency of the broadcast transmitter, this paper analyzes the working principle of the broadcast transmitter, discusses the factors affecting the data transmission efficiency of the broadcast transmitter, including frequency band bandwidth, transmission technology, output power, and then proposes the corresponding parameter optimization method, and focuses on the optimization of frequency band bandwidth parameters. The study found that by optimizing the broadcast channel parameters, the data broadcast timeliness is significantly improved, and the application effect is better.