The invention discloses an anti-jamming system and method applied to medical displays, comprising a decoding unit, a video sequence detection unit connected to the decoding unit, an interference judging unit connected to the decoding unit and the video timing detection unit, and an interference judging unit connected The first video delay unit, the synchronization signal regeneration unit connected with the decoding unit and the video timing detection unit, the second video delay unit connected with the synchronization signal regeneration unit, the interference determination unit, the first video delay unit and the second video delay unit A video gating unit connected to the video delay unit, a medical image processing unit connected to the video gating unit, a coding unit connected to the medical image processing unit, and a display unit connected to the coding unit. Advantages: When the synchronous signal is disturbed, the present invention has the synchronous signal regeneration function, so that the content of the picture will not be displaced, the picture will not flicker, and the damaged picture content can be displayed correctly to the greatest extent.