The mycelium of T. formosanum (characterized by DNA analysis) grown in a sterile liquid medium produced some VOCs. The VOCs were analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 23 compounds were identified and quantified. Among them, the main compounds were Dimethyl sulfide (19.82%), Isopropyl alcohol (9.84 ng/l), 2-Butanone (9.24%), Ethanol (7.84%), and 1, 3-Pentadiene (5.46%).