Problems caused by non-participants in tourism activities have been attracted the attention of many tourism researchers over the past decades. In every community there are a number of residents who are not participating in tourism activities due to many unknown reasons and don’t consider tangible benefits of tourism. Thus understanding their behavior toward tourism development seems crucial for a better planning. This study tried to evaluate the supporting behavior of non-participants in the case of Banghuris homestay, Malaysia. Thirteen non-participants interviewed during the data collection by in-depth interview sessions. The results revealed that there are eight main influencing parameters affecting non-participants; Relation with current participants, Time Limitations, Capital limitations, Livelihood status, Religious sensitivities, Envious sensitivities, Tourism Knowledge and Communication Barriers.