The invention discloses a system and a method for automatically removing dirt in a micro-pores based on machine vision guidance. The system for automatically removing dirt comprises a micro camera, a piercing needle holder, a cleaning piercing needle, a micro camera for for checking needle, a monitoring system and a movement mechanism. The system and method for automatically removing dirt in a micro-pores adopt the machine vision to accurately locate the positions of the dirt adhered in the micro-pores so that the cleaning piercing needle performs cleaning operations only at the position of the dirt; the system and the method for automatically removing dirt in micro-pores solves the problem that the location of the dirt can not be accurately positioned during manual cleaning, and the dirt in the hole can not be separated from the micro-pores wall, thus the cleaning efficiency and quality of micro-pores dirt are improved; The system and the method for automatically removing dirt in micro-pores realize the automation of micro-pore dirt cleaning and solve the problem that the hole wall and the surface of the hole are easy to be scratched when the manual cleaning of the micro-pores is done, and the service life of the spinneret is prolonged.