Efficient and cost-effective manufacturing of blisks remains a critical challenge in the development and production of aero-engines. Increasing electrode numbers for multi-tool synchronous electrochemical machining （ECM） is an effective way to improve the machining efficiency of blisk blade channels. However， due to the complex and narrow geometry of the blade channels， achieving synchronized multi-tool feed motion is difficult. This paper proposes a multi-channel progressive ECM method based on template structures， incorporating optimized trajectory design and template groove structure. The minimum area method determines the optimal cathode feed direction and rotational angles at different feed positions. Different template groove structures are designed by using the least squares method， the spline interpolation method， and the linear connection method. Simulation results indicate that the least squares method achieves the smoothest speed variations and the most uniform machining allowance distribution. Experimental results of multi-channel progressive ECM demonstrate that the residual machining allowance of the blade channels remains within 1.1 mm， with a consistency error of less than 0.3 mm.