The invention discloses a porcelain support insulator vibration flaw detection live detection system. The porcelain support insulator vibration flaw detection live detection system comprises a vibration flaw detection device, a wireless transmission module, an automatic alarm module and an intelligent analysis terminal, wherein the intelligent analysis terminal is communicated with a controller unit through a wireless network; an STM32 chip is mounted in the controller unit; a vibration sensor receiving probe of the vibration flaw detection device is connected with an A/D conversion module; both of the A/D conversion module and a power supply module are connected with the controller unit; all of an SDRAM memory, a FLASH memory and the wireless transmission module are connected with the controller unit; the intelligent analysis terminal wirelessly receives data packaged to be transmitted, decompresses the data, and generates a map in real time through the decompressed data so as to further judge the working condition of tested equipment; the automatic alarm module is connected with the controller unit; and when the intelligent terminal displays that the map is unqualified, the unqualified signal is transmitted to the controller unit and the flaw alarm is realized by the automatic alarm module.