In order to ensure pivotal project quality of Taocha canal headwork, the paper carried out a monographic study on concrete anti-cracking during the process of construction.On the basis of numerous indoors and construction site experiments, through the emulation calculations to different concrete temperatures and stresses at different construction sites, according to the actual situation of the worksite,it put forward a reasonable and scientific scheme of concrete anti-cracking for different dams at different construction periods. The project was strictly carried out according to the concrete anti-cracking scheme. The principal part of the dam was built up in September, 2012. Up to now, there is neither deep-fractured nor penetrable crack in concrete of the principal structure part. The anti-cracking effect is good.