A case of a 47-year-old female patient who had a severe headache for 2 days was reported. Spontaneous subarachnoid hemorrhage (SAH, hunt-Hess classification Ⅱ level)-anterior communicating aneurysm rupture was diagnosed by brain CT and digital subtraction angiography (DSA) examination.Intravascular interventional aneurysm embolization was performed, and the patient appeared progressive limb weakness 5 days after operation. Physical examination revealed grade Ⅱ upper limb muscle strength and grade Ⅰ lower limb muscle strength. The muscle tone of the extremities was decreased,and the tendon reflex disappeared. The pinprick pain was decreased below the double wrist joints and the ankle joints. After neuroelectrophysiology test and cerebrospinal fluid assay, the patient was diagnosed as Guillain-Barré syndrome associated with subarachnoid hemorrhagic aneurysm embolization.