An　liquid　chromatography-tandem　mass　spectrometry　method　coupled　with　a　stable　isotope　dilution　assay　was　established　for　the　simultaneous　detection　of　17　mycotoxins　and　their　derivatives　(aflatoxins　B-1,　B-2,　G(1),　G(2),　M-1,　and　M-2;　fumonisins　B-1　and　B-2;　ochratoxin　A;　zearalenone;　zearalanone;　alpha-zearalanol;　alpha-zearalenol;　T-2　toxin;　deoxynivalenol;　deepoxy-deoxynivalenol;　and　sterigmatocystin)　in　milk　and　dairy　products.　The　mycotoxins　were　extracted　with　acidified　acetonitrile　and　the　lipids　were　removed　using　a　Captiva　EMR-lipid　column.　The　average　recoveries　of　the　target　compounds　from　samples　spiked　at　three　different　concentrations　were　67-102%,　and　the　relative　standard　deviations　of　the　peak　areas　were　less　than　10%.　Limits　of　quantification　(S/N　=　10)　of　0.004-1.25　mu　g/kg　were　achieved,　which　are　significantly　lower　than　the　maximum　levels　allowed　in　various　countries　and　regions　for　each　regulated　mycotoxin.　Milk　and　yogurt　products　from　local　markets　and　e-commercial　platforms　were　analyzed　using　the　optimized　method.　The　screening　showed　that　aflatoxin　M-1,　deoxynivalenol,　fumonisins　B-1　and　B-2,　and　zearalenone　could　be　found　in　milk　and　yogurt　products,　especially　those　products　also　containing　grains　or　jujube　ingredients,　indicating　that　there　is　a　risk　of　mycotoxins　in　dairy　products.