Ceramic matrix composites have the characteristics of high hardness, high strength, anisotropy and heterogeneity, which lead to severe tool wear, poor processing quality and low processing efficiency during processing. The milling process of the laser ablation treated samples proved that almost no force and heat are generated when milling the powdery ablation products. Using finite element simulation and unidirectional ultrasonic vibration-assisted milling, it is found that the ultrasonic vibration-assisted milling process can achieve low-damage machining of ceramic matrix composites without reducing the processing efficiency. A combined processing technology of laser ablation and ultrasonic vibration assisted milling is proposed. Based on multi-dimensional indicators such as machining quality, machining efficiency, and tool cost, the milling machining strategy is comprehensively evaluated. The strategy of laser ablation+ultrasonic vibration assisted milling can obtain a better quality machined surface, and at the same time, the processing time is less, and the tool cost is low. In general, it is a process scheme that can realize high-efficiency and lowdamage milling of ceramic matrix composites