The principle and method for testing the atomized field of liquid propellants with a pulsed laser holography were introduced. The distribution patterns and sizes of the atomized droplets of a liquid propellant were analyzed based on its spraying experiments. The experiment shows that the sprayed particle diameter is around 10～20 μm under high pressure of the chamber,and diameter distribution can be adjusted effectively by the pressure. It′s proved that the laser holography is useful for the investigation and application of liquid propellant.