Double-edged grafting knife for improving forestry trees

The utility model discloses a double-edged grafting knife for forestry tree improvement, and particularly relates to the technical field of grafting knives, the double-edged grafting knife comprises a connecting block, the bottom of the connecting block is provided with a first groove, the top of the connecting block is provided with a second groove, the second groove is internally provided with a first clamping block, the top of the first clamping block is provided with a double-edged knife, and the top of the double-edged knife is provided with a second clamping block. A protective shell is arranged at the top of the double-edged knife, a second clamping block is arranged at the top of the protective shell, limiting grooves are formed in the two sides of the second clamping block, and connecting mechanisms are arranged on the two sides of the connecting block. By arranging the connecting mechanism, the protective shell used for protecting the double-edged knife can be connected with the connecting block thr