The development of the seismic active pressure designs of underground structures was first briefly introduced

followed by introduction of Xie theory and M-O formula.Then a new method was put forward

which combined Xie theory and M-O formula.Based on limit equilibrium theory

this method constructed sliding soil according to sliding surface parameters of Xie theory

which could also be used for calculating the seismic active pressure of underground structures through M-O formula.Finally

in one practical example

brief evaluation and analysis of this new method were given through comparing to other design methods.