Abstract: This article reviews the experimental discovery of the charm quark. In the 1960s, Nicola Cabibbo proposed the mixing angle theory in weak interactions to explain the decay of strange particles, but it failed to resolve the anomaly in the decay rate of K mesons. In 1970, Sheldon Glashow, John Iliopoulos and Luciano Maiani introduced the so-called GIM mechanism, predicting the existence of the charm quark to resolve this discrepancy. In 1974, Samuel C. C. Ting’s team at Brookhaven National Laboratory discovered the J particle (mass ~3.1 GeV) via proton-beryllium target experiments, while Burton Richter’s team independently observed the ψ particle at the SPEAR collider at Stanford. The unified discovery, named the J/ψ particle, directly confirmed the existence of the charm quark and marked the“November Revolution”in particle physics. Subsequent experiments identified charmonium states and charmed hadrons, advancing research in charm physics. After the discovery of the charm quark, China constructed the Beijing Electron-Positron Collider (BEPC), becoming a key player in international charm physics research. The discovery of the charm quark not only validated theoretical predictions but also laid a cornerstone for the development of the Standard Model and high-energy experimental technologies.