The object of this invention is to provide a skydiving simulator and a skydiving training process using the simulator, which simulates the environment and other conditions for purposes of skydiving training as if a skydiver performed a real skydiving process from the step of riding in an airplane to the step of landing on the ground. This simulator consists of a model fuselage (10), a rotary hanger unit (30) supporting a skydiver having jumped from the fuselage, and two fan units (40, 50) horizontally and upwardly forcing air currents into an open simulation space into which the skydiver jumps from the fuselage. Wind velocity sensors (46, 56) sense the velocities of the air currents from the two fan units, and CCD cameras (47, 57) produce images of the skydiver during the training process, and a central control unit (CCU, 60) controls the simulator and the process in real time.