Abstract: The initial supporting force of -960 m horsehead's lining structure was monitored in the auxiliary shaft of Wangfenggang Coal Mine. The results showed that the safety of the port position lining structure would be tend to the limit state. In order to enable the normal operation of lining structure, the secondary grouting and anchor wire complement were used. The field monitoring and measurement results showed that the deformation of horsehead's sides and the radial convergence value of the sidewall was stabilized, the force of anchor was less than the rupture force. The repair and treatment scheme was reliable, which ensured the safe and stable of horsehead supporting.