The invention relates to a capsule gas leakage detection method. The method comprises the following steps that: a, a capsule is inflated with a gas until pressure in the capsule reaches preset pressure; b, the gas in the capsule is made to be electrified; and c, an electrostatic condition on the outer surface of the capsule is detected, so that whether gas leakage occurs on the capsule is judged, and the location of gas leakage is detected. According to the capsule gas leakage detection method of the invention, the capsule is filled with the electrified gas, the electrostatic condition on the outer surface of the capsule is detected, and whether gas leakage occurs on the capsule is judged, and the location of gas leakage is detected. The detection method is simple and quick and can fast and efficiently determine the broken leakage location and breaking degree of the capsule.