In order to solve the problem of weak activation of conventional activators in deep reservoir，Shengli oilfield petroleum engineering technology research institute has developed a long-term functional activator with long carbon chain polymer polysaccharide as carbon source. The research on the aerobic activation，anaerobic activation and oil displacement effect of functional activator was carried out. The results showed that after the activation of functional activator，the number of bacteria was more than 5×108 cells/mL and the activation time was extended more than 60 days. The emulsification index of aerobic activated microorganism was as high as 95%. After anaerobic activation of microorganism，the gas production pressure reached 0.058 MPa. After activated by functional activator，the emulsification and gas production of crude oil by microbial metabolites were obviously improved. After the core was displaced by the functional activator，the displacement efficiency was increased by 14.1% on the basis of blank，which was 4.5% higher than that of conventional activator，the remaining oil in the core obviously migrated to the outlet end of the core. The functional activators could activate effectively the aerobic and anaerobic microorganisms to displace the crude oil with a broad field application prospect.