Along with the development of electric power system, the harmonics of integer times to fundamental component the inter-harmonics and sub-harmonics exist and are in special status. In this paper, cross high order accumulation is able to depress non-correlative noise and correlative gauss noises. MUSIC method based on cross-high-order cumulate is provided. Simulation results show that the method is effective and accurate to estimation sinusoid signal frequencies from hybrid colored noises and good performance. For low signal to noise ratio level is acceptable, this method is more applicable to practice.