Quantum information technology is an emerging discipline that combines quantum mechanics with information science, promising revolutionary advancements in computing, communication, and precision measurement. Optical quantum systems, known for their low transmission loss and low-noise coupling at room temperature, are crucial components of quantum information technology. To effectively utilize the low noise and strong quantum correlation properties of optical quantum systems, phase-locked control technology is widely applied in quantum state generation, mode regulation, and quantum state detection. This article reviews the research progress in phase-locked control technology within the field of optical quantum information field, including the principles of the technology, its typical applications in optical quantum information systems, and implementation schemes under weak light intensity conditions, and prospects for future development directions.