This study is a pilot study to evaluate impact of Tripterygium Wilfordii Hook F (TwHF) on T cell immune activation and immune activation in HIV-infected immunological non-responders. The investigators aim to evaluate the safety and efficacy profiles of TwHF in HIV immunological non-responders.

The investigators recruited 23 patients from Peking Union Medical College Hospital Outpatient clinic. They were all immunological non-responders. Nineteen patients will receive Triptolide wilfordii Hook F extract (10mg tid po) plus current cART, while 4 patients will continue their current cART. This study will last for 12 months. Patients will be followed up at month 0, 3, 6, 9, and 12. During each follow-up time point, adverse effects, T cell subsets, T cell activation markers and other routine tests will be ordered. The investigators hypothesis that TwHF might boost CD4 cell recovery by reducing immune activation.

Inclusion Criteria:

• Continuous antiretroviral therapy > 18 months, and consistent HIV-RNA< 40 copies/mL more than 12 months;
• 18-65 years old;
• Male or female;
• Good adherence and promise to follow-up;
• Inform Consent signed;
• CD4 T cells less than 300/ul .

Exclusion Criteria:

• Active opportunistic infection (not stable within 4 weeks 2 weeks ) or AIDS-related carcinoma;
• Hemoglobin (HGB) < 9 g/dl, white blood cell (WBC) < 2000/ul, granulin (GRN) < 1000 /ul, platelet (PLT) < 75000 /ul, Cr >1.5x ULN, ALT or AST or alkaline phosphatase (ALP) >3x upper limit of normal (ULN), total bilirubin (TBIL) >2x ULN, creatine kinase (CK) > 2x ULN;
• Pregnant or breastfeeding woman or woman with pregnancy plan;
• Active drug-user;
• Severe neurological defects;
• Active alcohol abuse;
• Severe gastrointestinal ulcer .
• End-stage disease such as cirrhosis, chronic obstructive pulmonary disease, congestive heart failure, recent myocardial ischemia,tumor, etc Those who are undertaking steroids, immunomodulator, anti-inflammatory agents