The traditional wireless transmission method has a problem of insufficient data encryption, which makes data easily stolen, monitored, or tampered with during transmission. To improve the security of film and television material wireless transmission, a transmission method based on mobile edge computing is proposed. First, the deployment planning of mobile edge computing is performed. Second, the initial key of the chaotic system is constructed, the Lorenz system and double-coupled logistic map are started, the composite random sequence is obtained, and its parity is used for encryption. Finally, based on the encryption results of the film and television materials, the priority of wireless transmission of the film and television materials is set. Considering Rayleigh fading, shadow fading, and path loss, the Q-learning algorithm is used to optimize task reordering and achieve wireless secure transmission of film and television materials. The experimental results show that the edge server throughput of this method is significantly improved. The transmission delay is effectively reduced, which is about two-thirds lower than the traditional transmission method. The minimum latency is only 23.10 milliseconds. The results indicate that the data transmission efficiency is higher, the response speed is faster, and the user experience is significantly improved.