Tiantangzhai gneissis granite massif which is considered a Pre-Cambrian migmatitic granite by most references, in the authors' opinion, is product of crystallization of magma and belongs to I'u-type granite. Its emplacement age was Early Cretaceous.The concordant ages of 124.7 Ma for the zircons have been obtained. Since the emplacing of the granite, theuplifted speed of Dabieshan region is not very quick. An average, there is 0.1mm per year.