Abstract: The problem of roofing at the end face of a large mining height intelligent integrated workface is investigated. Starting from the mechanical system of the support surrounding rock, the pressure in the columns and balance jacks of the brackets under the three different conditions of overhead mining, back mining and horizontal mining are analysed to adjust the distribution of the support resistance between the columns of the brackets, so that the point of combined force of the hydraulic brackets is shifted forward and the support resistance of the front beam is improved to reduce the risk of roofing and improve the continuity of the rock at the end face, which can The purpose of controlling the top of the slab is achieved. Through the analysis of the example, the risk of endface caving is reduced and the production quality of the working face is ensured.