This paper uses grey model, takes Yunnan tourism market as an example, quantitatively makes shortterm forecasting and then makes Markov adjustment. By operation and multiple test, this paper obtains the forecasting value of internal, external and overseas total tourism market demand in the coming three years, finds that in the coming three years, the total demand of Yunnan tourism will increase and will keep steadily growth, that overseas demand will usher a dramatic rise in 2015, then decline and become stable, and that the proportion of the domestic tourists will become bigger and bigger, however, the proportion of the overseas tourists will become smaller and smaller. According to these results, the corresponding policies and suggestions are pointed out.