Flexoelectric　materials,　which　could　generate　polarization　in　response　to　a　strain　gradient,　could　be　utilized　in　a　wide　range　of　devices　such　as　actuators　and　sensors.　However,　the　flexoelectric　coefficients　of　most　dielectrics　are　too　small　to　be　utilized.　One　of　the　most　promising　flexoelectric　materials　is　ferroelectrics　whose　flexoelectric　coefficients　are　orders　of　magnitude　higher　than　those　of　ordinary　dielectrics.　Despite　of　intensive　research　in　the　past　twenty　years,　the　record-high　flexoelectric　coefficient　(μ1122=100μC/m)　of　Ba0.67Sr0.33TiO3　ferroelectric　has　not　been　surpassed.　Here　we　show　that　by　tuning　the　first-order　paraelectric-ferroelectric　phase　transition　of　BaTiO3　to　near-critical　through　doping　BaZrO3,　a　drastic　enhancement　of　flexoelectric　coefficient　(μ1122=140μC/m)　occurs,　which　is　ascribed　to　the　enhancement　of　both　intrinsic　and　extrinsic　flexoelectricity　resulting　from　the　strong　lattice　instability　at　the　critical　transition.　This　study　demonstrates　a　general　design　method　to　achieve　high　flexoelectric　coefficients　in　a　wide　range　of　ferroelectric　systems　through　searching　for　critical　ferroelectric　transition　points.　©　2022