The invention discloses a visual mechanical vibration detecting system. The visual mechanical vibration detecting system is mainly composed of a 'vibration camera' acquisition device and a data analysis system. Data obtained by the 'vibration camera' acquisition device are transmitted to the data analysis system through a data acquisition card. The 'vibration camera' acquisition device comprises 25 laser vibration measuring sensors which are arranged on the different radius parts of a panel and a camera arranged at the center of the panel. The data analysis system comprises vibration signal processing software and result imaging software which are pre-installed in a computer. According to the visual mechanical vibration detecting system, on one hand, the specific position, the intensity and the frequency of mechanical vibration in a measuring area can be quickly and synchronously identified, and the precision is high; on the other hand, an information collecting system is small in size and easy to operate.