Hyperventilation is the patient due to a variety of pathological factors under the state, the emergence of hyperventilation, can appear a series of clinical manifestations, for example, due to pulmonary failure and other pathological conditions, the patient will use the ventilator to maintain normal respiratory function, if there is no standardized use of the ventilator, excessively given to the patient for ventilation. Another is the stimulation of mental stress, due to excessive pressure, restlessness, mania, anger and other emotions and induce the emergence of respiratory acceleration, hyperventilation, these can lead to hyperventilation, this time there will be too much carbon dioxide discharged from the body, resulting in respiratory alkalosis, the most common manifestation of the perioral and limb skin tingling symptoms.