High-frequency breaker is a new type of reef removal technology that meets the requirements of ecological waterway remediation.To explore the gouging law of high-frequency breaker reef clearing，the high-frequency breaker gouging model test is conducted，and the gouging depth is taken as the measurement standard of rock breaking efficiency.The law of the change of drill rod gouging depth with time is studied，and the influence relationship of different rock mass strength and different working gears on the gouging depth is analyzed.Based on this，the empirical formulas of gouging depth，chiseling time and rock mass strength under different working conditions are fitted.The results show that the chiseling depth has a nonlinear positive growth relationship with the chiseling time，and the increase amplitude decreases with the increase of time.The gouging depth decreases with the increase of rock mass strength.The gouging efficiency increases with the increase of the working gear，with gear 3 being the optimal working gear.