In　this　paper,　a　robust　control　method　is　proposed　for　the　vibration　suppression　of　the　piezoelectric　laminated　composite　cantilever　rectangular　plate　subjected　to　the　aerodynamic　force　in　the　hygrothermal　environment.　The　laminated　composite　cantilever　rectangular　plate　is　placed　on　the　piezoelectric　actuator　and　sensor　for　the　upper　and　lower　surfaces.　The　classical　laminated　composite　plate　theory　and　Hamilton＇s　principle　are　applied　to　derive　the　dynamic　equation　of　motion　for　the　piezoelectric　laminated　composite　cantilever　rectangular　plate　under　the　aerodynamic　force　and　hygrothermal　loads.　The　structural　damping　is　considered　for　the　piezoelectric　laminated　composite　cantilever　rectangular　plate.　Galerkin　method　is　used　to　obtain　a　two-degree-of-freedom　discrete　ordinary　differential　control　equation　of　motion.　For　the　active　vibration　suppression,　a　robust　controller　for　the　uncertain　systems　is　designed　through　the　obtained　ordinary　differential　equation　of　motion.　Moreover,　the　full-dimensional　state　observer　is　constructed　to　calculate　the　close-loop　system.　The　influences　of　the　moisture,　temperature　and　geometric　parameters　on　the　dynamics　behaviors　of　the　piezoelectric　laminated　composite　cantilever　rectangular　plate　are　investigated.　The　accuracy　and　effectiveness　of　the　robust　controller　are　verified　in　terms　of　the　moisture　concentration,　temperature,　aspect　ratio,　damping　and　parameter　uncertainty　by　numerical　simulations.