Through time-series CCD photometry using a 155mm refractor, we found a new $delta$ Scuti type variable star, HD 235428, near a known bright $delta$ Scuti type star, DQ Cep. We performed follow-up observations using a 61cm telescope at Sobaeksan Optical Astronomy Observatory. Four frequencies have been derived by multiple-frequency analysis, which are 15.804, 5.498, 15.351 and 24.516cycle $day^{-1}$, respectively. V-amplitude of HD 235428 is ${Delta} V$ = 0.026.