To study the characteristics of electron scale turbulence, an enhanced scattering (ES) diagnostic has been developed on the J-TEXT tokamak. This ES diagnostic consists of 8 detection channels covering 44–58 GHz with a 2 GHz step. It launches and receives X-mode microwaves from the high-field-side. The probing wave is scattered by electron-scale turbulence at the upper hybrid resonance layer on the low-field-side, where the electric fields of both probing and scattering waves are enhanced. The ES diagnostic has been successfully applied to J-TEXT experiments. Through cross-validation with the Doppler backscattering diagnostic, it has been verified that the ES diagnostic can measure high wavenumber fluctuations, providing a new diagnostic tool for the study of electron-scale turbulence on J-TEXT.