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Meteor trail communication has the characteristics of short-time burst transmission, In order to transmit as much useful information as possible in a limited transmission time ,to improve the transmission rate and the system throughput, the Trellis Coded Modulation(TCM) technology suitable for meteor trail communication channel is proposed. Combine 8PSK constant envelope modulation with TCM to make full use of the transmission power of the system; In order to reduce the bit error rate of TCM algorithm, TTCM-8PSK algorithm is formed by replacing convolutional coding with turbo coding; The error rate performance is further improved by selecting the interleaving parameters and code length with excellent performance; In decoding, the external information of iteration and branch transition probability are weighted to reduce the complexity of the algorithm. The simulation results show that: Compared with the common RS coding and BPSK\QPSK modulation, the TTCM-8PSK algorithm not only improves the throughput, but also improves the bit error performance. It can effectively improve the throughput of meteor trail communication system, and provide a theoretical basis for the development of the next generation meteor trail communication system.