Teachers are an important audience for museums, as they are influential opinion leaders. However, many teachers do not know how to make full use of museum resources. A museum looking to develop potential audiences cannot overlook this important group. A potential audience may become an existing audience or one that leaves the museum altogether, depending on the specific actions of the museum. In order to understand teacher willingness to visit museums, the National Museum of Natural Science (NMNS) implemented a survey of potential target factors in September of 2007, which focused on natural science instructors and instructors who attended an event associated with "Respect for Teachers Month".The results showed that, no matter whether an independent or mission-oriented visit, time and spatial factors are the main reasons inhibiting teacher visits to the Museum. Although unfamiliar with all of the educational resources available to them, respondents reported a strong willingness to visit the Museum in the future. We hope that these results will serve as an important reference for NMNS and other museums when developing educational activities and marketing campaigns.