Space-time coding is a high-speed wireless communication method for coding transmission system, with the different times, on different antennas to send data, which have increased the use of time and spatial diversity data transmission reliability.Recently, a new communications technologies have been proposed, called spatial modulation, in addition to the traditional signal constellation, the transmission antenna can also carry data bits to increase spectrum efficiency.In this paper, we construct multi-dimensional space-time coding space segment modulation transfer matrix of set partitioning, Convolutional code proposed a combination of trellis coded spatial modulation design, and simulation results show that this new approach can be seen in the case of significantly lower error rate.