||A lot of people worry that seafood was polluted after Fukushima Daiichi nuclear disaster. 124 samples were collected in this study at 12 fish markets in this study. All samples were delivered to the Atomic Energy Council to detect radiation contamination. Samples include tuna, flag, sailfish, bonito, shark, spaniard, spanish mackerel, mackerel, saury, dolphinfish, flying fish and some coastal fish. All of detection results are undetection. By our study and others research, we know that fish discharge most radioactive materials when it move from high pollution areas to the clean area. Taiwan’s seafood is safe.