The invention provides a simulation method for achieving multimachine formation through a single simulator. The method involves a formation simulation control machine and the flight simulator, wherein the formation simulation control machine stores and operates formation simulation control programs and a formation planning document. The problem that multimachine formation simulation training cannot be conducted through the single simulator is solved, and multimachine formation simulation training is not limited by areal distribution and the number of pilots. Due to the fact that flight parameter data recorded in the formation flight process of a real aircraft are adopted, training is close to life. By updating a flight parameter data table in a real aircraft flight parameter database, a formation flight scheme can be added to a simulation aircraft formation flight scheme, and the defect that the single simulator can only conduct single-track formation flight is overcome. An aircraft dynamics and aircraft kinematics mathematical model universal for a real fixed wing aircraft is selected and used, and simulation of simulation aircrafts of different models can be achieved by replacing data in the real aircraft flight parameter database and a real aircraft design parameter database.