The following causes are common when walking to the left: 1, trauma to the lower limbs: such as fracture, dislocation and muscle injury, the patient will have limb swelling, pain and restricted activity, and when walking with weight, because both lower limbs can not normal fully weight bearing, so it is easy to appear when walking to the left side, through cold compresses, braking, fixation can make clinical symptoms can be alleviated. 2, intracranial neuropathy: such as cerebral hemorrhage, cerebral embolism caused by The specific location and degree of intracranial nerve damage can be found through CT scan or MRI. Early diagnosis and early treatment can improve clinical symptoms; if treatment is delayed, irreversible consequences will result and the patient may suffer lifelong accompanying limb dysfunction and cannot maintain a normal walking status.