With the growth in wildlife tourism, research on the effect of human disturbance on wildlife has become an important issue.Awareness of these effects should guide the management of wildlife tourism, improve tourist satisfaction and promote wildlife conservation. This research reports on thetolerance of Crested Ibis to human disturbance in its wardering stage.The trial was in the months of October and November of 2007 at the Crested Ibis National Reserve in Han Zhong A manipulative experiment methodology was employed. The research demonstrated that Crested Ibis has a strong tolerance to human disturbance at wardering stage. It is however, relatively sensitive to successive disturbance. The AD (Alert distance) was mesured to be 1.6 times greater than FD (Flush distance).The distances were (38.57±14.01)m, (23.84±9.45)m respectively.The One of the main factors influencing tolerance to disturbance was the colour of the clothes of the subject. The Crested Ibis is more sensitive to colorful clothes. If the birds are more proximate to human buildings, the AD and FD of Crested Ibis decreases. That is to say, the tolerance of Crested Ibis to human disturbance becoming stronger as the distance to human buildings decreases. The Crested Ibis has a set-back effect to the road. Based on above research, we advised that the minimum safe distance for a tourist to approach the bird should be a circular region of a radius of AD, In the wandering phase the minimum safe area of the Crested Ibis is about 4700m2. Tourists should be prohibited from entering this minimum area and from wearing colorful clothes.