An effective method was established for the simultaneous determination of six kinds of banned organophosphorous flame retardants，including tris（1-aziridinyl） phosphine oxide（TEPA）,tris（2-chloroethyl）phosphate（TCEP）,tris（2,3-dichloropropyl）phosphate（TDCP）,bis（2,3-dibromopropyl） phosphate（DDBPP）,tri-o-tolyl phosphate（TOCP） and tris（2,3-dibromopropyl）phosphate（TRIS）,in textiles by gas chromatography tandem mass spectrometry（GC-MS/MS） combined with ultrasonic extraction.The organophosphorous flame retardants in textiles were first ultrasonically extracted with acetone,and then analyzed by GC-MS/MS under multiple reaction monitoring （MRM） mode.The linear ranges of TEPA,TCEP,TDCP,DDBPP,TOCP and TRIS were 9.17-366.80，0.95-75.98，1.04-83.20，41.60-832.00，3.80-75.90，40.48-809.60 μg/L,respectively,and their quantitation limits（S/N=10）were 3.0，0.2，0.3，25.0，2.5，29.0 μg/kg,respectively.The spiked recoveries varied from 83％ to 96％ with RSDs of 3.7％-9.8％.The developed method was simple,rapid,sensitive and accurate,and could satisfy completely the demand of the analysis of banned organophosphorous flame retardants in textiles.