The microwave assistant distillation(MD) combined with solid phase micro-extract and GC-MS(SPME-GC-MS) was used to determine the earthy compounds of geosmin(GEO) and 2-methylisoborneol(MIB) in silver carp muscle.The optimized conditions of MD were: distillation at 350 W for 8 min,the recovery rate of MIB and GEO were 53.5% and 69.9% respectively,and the SD was less than 5%.In the range of 0.05-5 μg/kg of MIB and GEO,there was good linear relationship between their GC-MS chromatogram area and their concentration(R2 >0.98).MD-SPME-GC-MS was used to detect the MIB and GEO in the silver carp muscle,the result indicated that their concentration were 1.83 and 1.37 μg/kg respectively.Compared the effect of water-washing,marinating in red tea,acid-/alkali-process,and fermentation with yeast on the removing of earthy-muddy odor compounds of MIB and GEO,the alkali-process was the most effective one.MIB and GEO retained in surimi was 0.44 and 0.46 μg/kg,respectively by alkali deodorized method.