Objective　To investigate the clinical significance of P-gp and TGFβ1 in cerebrospinal fluid (CSF) of drug-resistant epilepsy.Methods　Thirty responsive epilepsy patients were selected as sensitive group,30 cases of drug-resistant epilepsy were drug-resistant group,20 healthy persons were selected as control group.The levels of P-gp and TGFβ1 in CSF of all subjects were measured by ELISA,and the results were compared between groups.The levels of P-gp and TGFβ1 in patients with different seizure types in drug-resistant group were compared at the same time.Results　P-gp and TGFβ1 in CSF of drug-resistant group were (21.5±3.1) ng/ml and (217.3±49.6) pg/ml respectively,which were significantly higher than that of sensitive group and control group (P<0.05).The levels of P-gp and TGFβ1 in CSF were no significantly different between sensitive group and control group (P>0.05).The levels of P-gp and TGFβ1 in CSF of drug-resistant epilepsy patients with different seizure types had no significant difference (P>0.05).Conclusion　The levels of P-gp and TGFβ1 in CCSF can be used as an important detection marker for drug-resistant epilepsy of different seizure types.