Organic　phototransistors　have　attracted　tremendous　attentions　due　to　their　light　weight　and　good　compatibility　with　flexible　substrates.　However,　developing　organic　phototransistors　with　high　performance　over　the　broadband　spectrum　still　remains　great　challenge.　In　this　study,　high-performance　broadband　phototransistor　is　developed　with　organic　materials/MXene,　which　exhibits　improved　mobility　and　outstanding　photodetection　characteristics.　The　combination　of　MXene　and　organic　semiconductor　materials　provides　a　promising　way　to　prepare　high-performance　OPT　with　broadband　detection.