Abstract: Environmental Education Volunteer (EEV) is an important person to distribute the knowledge and understating on environmental issues, particularly to inspire the people to change their behaviors for natural resources and environment conservation. Additionally, environmental education volunteer should have public mind to serve community and society in terms of awareness and consciousness raising, attitude, belief and behavior changing through knowledge giving activities. Human behavior has been reported with a new and stronger evidence that it is the most essential factor to increase green house gases. The objective of this research was to develop a prototype of environmental education volunteer. The sample was selected by purposive sampling technique. Instruments composed of knowledge of trainer characteristics, public mind behavior, inspiration of environmental conservation and environmental education volunteer characteristics. One way ANOVA and t-test was used for data analysis. The process for Training of the Trainer (TOT) was implemented with Participatory Appreciate Influence Control technique (PAIC) integrating with brain storming during training process and evaluation was done with Three Dimensional Evaluation (TDE) and Four Dimensional Evaluation (FDE). TDE covers self-, friend- and facilitator-evaluation and FDE covers trainer self-, audience-, trainer friend- and expert trainer-evaluation. The action plan formulations and project practices were evaluated with participatory performance, Assessment, Monitoring Evaluation and Impact (PAMEI). The results illustrated that after PAIC process implemented, the mean scores of post-test of knowledge of trainer characteristics, public mind behavior, inspiration of environmental conservation, EEV characteristics and training achievement were higher than pre-test with statistical significance (p<0.01, p<0.01, p<0.01, p<0.01 and p<0.01), respectively. The three dimensional evaluationwas used to evaluate the participation of participant, the finding revealed that the mean scores of friend and facilitator evaluation showed no statistical difference (p>0.05) but mean scores between self- and friend-evaluation and between self- and facilitator-evaluation showed statistically difference (p<0.01 and p<0.05). The mean scores of both friend- and facilitator-evaluation were higher than self-evaluation. This indicated that the participants evaluated themselves lower than friend and facilitator because they are humble persons that are general style of Thai. However, FDE was revealed that it was no statistical difference (p>0.05). It implied that the opinions of trainer self-, trainer friend- and audience-evaluation and expert trainer were no differences. During PAIC implemented, the 5 focus groups discussion were done, the overall results showed at least five projects purposed such as Environmental knowledge given to friends, Tree cultivation for faculty public mind for environmental conservation inspire student on voluntary mind and Network development of environmental education to be implemented according to the action plans on empowerment of EEV.