Abstract: The practical supporting force of middle rock pillar was revised according to its effective load width, and the modified calculation method for the ground pressure of deep buried neighborhood tunnels was proposed based on the limit equilibrium theory. The modified calculation method was then applied to the engineering practice of North Xingye Tunnels, and the calculation results were compared and validated with numerical simulation and field measurement. As far as the vertical ground pressure from modified calculation method was concerned, the main tunnel was greater than the auxiliary tunnel and the inner side was greater than the outer side. As far as the normal ground pressure from numerical simulation was concerned, the distribution pattern accorded with field measurement generally. The peak of normal ground pressure appeared at the spandrel and then decreased gradually to crown and sidewall. The vertical ground pressure from modified calculation method also agree with its counterpart from numerical simulation and field measurement. The modified calculation method, by considering the practical supporting force of middle rock pillar, might be more suitable in engineering practice and could provide some reference for the design of deep buried neighborhood tunnels.