In　order　to　control　the　earth　pressure　balance　(EPB)　of　pressure　chamber　more　accurately　and　efficiently　during　tunneling　process,　an　integrated　optimization　control　method　is　proposed　for　cutter　head　system,　thrust　system　and　discharge　system.　A　stratum　identification　system　is　designed　which　takes　the　torque　penetration　index　(TPI)　and　field　penetration　index　(FPI)　as　input　character　parameters.　An　expert　control　system　is　established,　and　it　can　give　the　control　strategy　of　cutter　speed　based　on　the　quantitative　results　of　stratum　identification　and　control　rules.　On　this　basis,　a　least　squares-support　vector　machine　(LS-SVM)　nonlinear　predictive　control　strategy　is　given　to　coordinatively　control　advance　speed　and　screw　conveyor　speed,　and　the　control　variables　can　be　rollingly　optimized　by　means　of　ant　colony　system　(ACS)　algorithm.　The　experiments　show　that　the　earth　pressure　balance　in　chamber　can　be　controlled　very　well　even　though　the　working　condition　changes,　which　demonstrates　the　effectiveness　of　this　method　and　the　earth　pressure　balance　in　chamber　can　be　realized　by　multiple　subsystems　coordinative　optimization　control.