Objective:To investigate the rebuilding of the stereoacuity in intermittent exotropia patient and the related factors affecting the stereoacuity before and after operation. Methods:56 cases of intermittent exotropia were examined before operation and 6 months after operation respectively. Near stereoacuity were tested by Yan shaoming stereogram and distance stereoacuity by Synoptophore. Results:The loss of the near stereoacuity of intermittent extropia patients was less than that of distance stereoacuity. There was no significant difference of the near stereoacuity before and after operation,but the distance stereoacuity were obviously improved by operation. Fusional faculty before operation was essential for the recovery of stereopsis. The difference of the recovery of stereopsis between patients who were younger than 9 years old and older than 9 years were significant. Conclusion:The operation can significantly improve the distance stereopsis of the intermittent exotropia patients. Patients with intermittent exotropia should resort to surgical treatment as early as possible. The early correction of eye position will benefit the restoration of stereopsis and the achievement of functional cure.