Abstract: A micro-solid-phase extraction device was developed using the sol-gel method by assembling with a metal-organic frameworks (MOFs) with the gel to form a 1mm membrane. Subsequently, this device was applied for determination of seven polybrominated diphenyl ethers (PBDEs) in the water by coupling with the gas chromatography-electron capture detector. Variables affecting the extraction efficiency including the amount of the MOFs, extraction temperature, extraction time and desorption time were detected. Under the optimized conditions (MOF 4mg,extraction temperature 70℃,evtraction time 50min,and desorption time 15min) recoveries of the seven PBDEs were in the range of 74.9% to 98.1%, and the relative standard deviations were between 3.3% and 5.7%. Limits of detection were less than 4.7ng/L for all seven PBDEs.