A micromirror spinal dura mater external cavity puncturing device mainly comprises a drug opening of a puncture needle (1), a micromirror camera (2), a water injection port (3), a thrust sensor (4), a water storage bag (5), a water injection pipe (6), an optical guide fiber (7), a syringe body (8), an electrical control push rod (9), a connection wire (10) and a micromirror computer (11). The drug opening of the puncture needle (1) is arranged under the water injection port (3) the micromirror camera (2) is arranged in front of the drug opening of the puncture needle (1) the water injection port (3) is arranged behind the micromirror camera (2) the thrust sensor (4) is arranged in front of the electrical control push rod (9) the electrical control push rod (9) is arranged under the connection wire (10) the micromirror computer (11) is arranged between the thrust sensor (4) and the electrical control push rod (9). The device ensures that the electrical control push rod (9) carries out an accurate puncturing process, and the accuracy of the puncturing position is improved. The manual operation is replaced by the micromirror camera (2), the judging accuracy is high, and the puncturing effect is improved.Linvention concerne un dispositif de perforation de cavité externe de dure-mère vertébrale de micro-miroir, qui comprend principalement une ouverture de médicament dune aiguille de ponction (1), une caméra de micro-miroir (2), un orifice dinjection deau (3), un capteur de poussée (4), un sac de stockage deau (5), un tuyau dinjection deau (6), une fibre de guidage optique (7), un corps de seringue (8), une tige-poussoir de commande électrique (9), un fil de raccordement (10) et un ordinateur de micro-miroir (11). Louverture de médicament de laiguille de ponction (1) est disposée sous lorifice dinjection deau (3) la caméra de micro-miroir (2) est disposée à lavant de louverture de médicament de laiguille de ponction (1) lorifice dinjection deau (3) est agencé derrière l
