Dr. Tian is one of the top neurosurgery specialists in China. He with his team has performed over 500 cases of stem cell transplantation cases since year 2000. He is an executing director of International Stereotactic and Functional Neurosurgery Association, a member of International Neurosurgery Association, vice president of Beijing Neurosurgery Association. His title includes VP of China Navy General Hospital (CNGH), president of Neurosurgical Center of CNGH, Professor of China Second Military Medical University (CSMMU), certified supervisor of post-doctor, the head of Naval Institute of Neurological Disorders.

His specialty includes:

1. Stem cell transplantation (SCT): this treatment make a good progress in the treatment of Parkinson's disease, residual of cerebral infarction, cerebral atrophy, cerebral palsy, NCL(Neuronal Ceroid Lipofuscinosis, Batten Disease) , Encephalodysplasia and spiral cord transection.
2. Robotic-assisted neurosurgical operation: He led a team to develop CAS-R-2 frameless stereotactic instrument in 1997. More than 3000 cases have been performed by using the robotic system. The effective rate was 93.4% without serious surgical complication.
3. Modern stereotactic operation: He had studied in the field for 30 years, and without craniotomy treated many diseases such as hypertension intra-cerebral hemorrhage, epilepsy, brain abscess, the intra-cerebral foreign body and Parkinson disease.
4. The intra-tumor irradiation for brain tumor: The treatment of intratumoral irradiation is used in original and recurrence brain tumors difficulty to treat, including astrocytoma, malignant meningioma, metastasis and craniopharyngioma. This operation with minimal invasion is proved to have better outcomes in the treatment of deep brain tumors.