The present invention discloses a corona discharge component, an ion mobility spectrometer, a computer program and a storage medium, wherein the corona discharge component includes an ionization discharge cavity, where the ionization discharge cavity includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a to-be-analyzed gas and a ring-plate-shaped port which forms a non-uniform electric field with corona pins and has a round hole in the middle; and a rotating shaft is insulatively mounted on a cylinder wall of the metal corona cylinder, and is perpendicular to the axis line of the metal corona cylinder, and a turntable provided with multiple corona pins at its outer edge is arranged on an end part of the rotating shaft. The present invention also discloses an ion mobility spectrometer using the corona discharge component. The corona discharge component, the ion mobility spectrometer, the computer program and the storage medium provided by the present invention can prolong the service life of the whole corona discharge component, reduce the discharge voltage of an iron source and improve the discharge stability of the iron source, and can be manufactured in batches more easily as multiple corona pins are fixed on a PCB (printed circuit board) and the precision and stability of electrode positions can be achieved during installation relative to suspension installation of pin-shaped electrodes.