Abstract: A dual-channel combine harvester suitable for strip-like compound planted soybeans and corns and a method thereof are provided. The combine harvester includes a mobile harvester body and a combine cutting table portion installed on the mobile harvester body. The combine cutting table portion include a main bracket which is provided with a soybean cutting table and a corn picking table. The main bracket is rotatably installed on the mobile harvester body, and a first angle adjusting mechanism is installed between the main bracket and the mobile harvester body. The soybean cutting table is provided with a first bracket fixed with respect to the main bracket. The corn picking table includes a second bracket which is rotatably installed with respect to the main bracket, and a second angle adjusting mechanism is arranged between the second bracket and the main bracket.