In the article effects of initial pulse chirps on dispersion managed soliton transmission systems are discussed using computer simulation.The main results are:the positive initial chirps enhance the transmission characteristics of the soliton by postcompensation;and the negative initial chirps improve the transmission characteristics of the soliton by precompensation.The optimum initial chirps are related to compensation configurations and input powers.A new method to design dispersion managed soliton transmission systems by prechirp technology is given.