Brain-Computer　Interface　(BCI)　is　a　technology　based　on　Neuroscience,　Artificial　Intelligence　and　Signal　Processing.　Its　application　in　the　fields　of　medical　treatment　and　rehabilitation　engineering　has　been　widely　studied.　This　paper　aims　to　explore　a　new　application　of　BCI　in　psychological　experiments.　We　developed　a　c-VEP　BCI　system　for　psychological　experiments,　which　enables　the　participants　of　the　experiments　to　express　their　choices　only　by　gazing　at　the　intended　option.　In　the　traditional　experiments,　the　participants　are　usually　asked　to　transmit　their　decisions　by　pressing　buttons.　In　this　system,　the　options　exhibited　on　the　screen　are　flashed　according　to　different　m-sequences　and　the　intentions　of　participants　are　recognized　by　classifying　VEPs　in　EEG　signals　during　the　periods　when　they　are　focusing　on　the　options.　This　system　has　been　used　to　support　a　psychological　experiment,　showing　the　feasibility　and　value　of　introducing　BCI　into　psychological　studies.　©　2019　IEEE.