The invention discloses a phase modifier vibration signal acquisition and storage method. The phase modifier vibration signal acquisition and storage method comprises the steps of: acquiring a vibration signal, and converting the vibration signal from a physical signal into a corresponding electric signal; preprocessing the converted electric signals; converting the preprocessed electric signal into a corresponding digital signal; transmitting the vibration signal converted into the digital signal to a cache region by adopting a one-way transmission technology, and then transmitting the vibration signal to a lower computer; and driving the lower computer to screen out data conforming to a preset screening rule according to characteristics of the vibration signal for storage. According to the phase modifier vibration signal acquisition and storage method, data length is reasonably set, whether the data needs to be stored or not is judged by taking the equipment state variation as a characteristic quantity, the storage and access requirements of supporting various types of structured relief and unstructured data as well as linearly increased mass real-time data are met, the real-timecalculation of high-speed sensing data streams can be realized for large-scale real-time sensing data, and a good foundation is laid for establishing a phase modifier online monitoring and fault diagnosis system.