The invention discloses a virtue instrument-based automobile simulated vibration low-frequency detection and analysis system. The system comprises two wire drawing type displacement sensors, a data acquisition card, and a computer. The sensors change displacement signals into voltage signals and output the voltage signals to the data acquisition card. The data acquisition card is connected with the computer and inputs the acquired voltage signals to the computer. By virtue of a LabVIEW software program, the computer obtains vibration signals read by the sensors, analyzes and processes the vibration signals, and finally displays the vibration signals on a user interface on the computer. The system is simple in structure and accurate in test result, and is practical and convenient. The signal analyzing and processing functions are mainly realized by depending on the software, and the software system is convenient for upgrading and maintaining. The system can detect low-frequency large-amplitude signals and has no signal conditioning circuit, thereby being simple in circuit.