The authors hold that TEBC-tourist environmental bearing capacity,is a special resource of scarcity which asides by specific laws of distribution and the human should utilize the resource reasonably-but, "overbering" is harmful for the development and protection of the resource;"hyperbearing" means waste and letting idle of the resource. "Tourist capacity" is defined by the author as an inner index of TEBC, it is mainly determined by the tourism activities and contents. Besides this index, two other indexs are involved in the determination of TEBC, that is, economic capacity and psychological capaciy of local people, and accordingly, the authors design the evaluation method by means of mathematics model. On the basis the above method,the authors made quantitative analysis on the TEBC of Mt. Tai and as a result, concluded that the amount of daily TEBC for Mt. Tai is 16 600 people and the annual amount is 4 300 000. And also from the view of time and space, the authors analyse the principles of changing of TEBC resources, and with the statistics in hand, the authors also analyse the utility intensity and developmental potentiality of the main scenic regions of Mt. Tai in different time and space. And finally, directing against the utilization condition of TEBC of Mt. Tai, the authors put forward space-time regulation measurements.