A high-ceiling tent frame includes one or more frame units. Each frame unit includes three or more vertical poles and a center pole connected by supporting pole groups. Each frame unit also includes vertical pole fixed and slidable connecting bases installed at the vertical poles, and center fixed and slidable connecting bases installed at the center pole. Each supporting top pole group includes one or more pairs of first connecting pole units. The first connecting pole units in each pair are pivotally connected to each other. Each first connecting pole unit includes two first connecting poles pivotally connected to each other and forms an X-shape when the tent frame is unfolded. Adjacent frame units are connected to each other by sharing at least two vertical poles.