This research takes Penghu as an example to discuss the influence of tourism destination image, promotions to traveling will and traveling behaviors. In the sampling method, we take convenience sampling from non-Penghu County residents who are over 16 years old to carry on the questionnaire survey to find out whether the degree of travelers’ traveling point image will effect their traveling will and traveling behavior to Penghu. Moreover, in this research we also discuss whether the relating promotions will attract the travelers to take their traveling behaviors. In the result analysis, we use such statistical methods as One Way ANOVA and T Test, Regression Analysis and Path Analysis to make statistical analysis for effective samples of 713 questionnaires. The main purpose of this research is hoping that there are better supporting measures to promote sightseeing industry in Penghu. And the analysis results of this research are as follows: the influence of tourism destination to traveling will and behavior are significant. Promotion can promote travelers to own their traveling will, in the future they will also take traveling behaviors possibly.