[Objective] In order to select the optimal plant varieties for the ecological remediation of crude oil contaminated soil in Eastern Gansu Province, 4 kinds of indigenous plants of this area were selected as the experimental material, and site ecological remediation project was conducted with an experimental period of three months. [Methods] The degradation rate of total petroleum hydrocarbons (TPH), the number of crude-oil degrading bacteria and some plant growth indicators in rizospheric soil of four indigenous plants under different TPH concentrations stress were investigated by the conventional method. [Results] ① The rizospheric soil TPH degradation rate of Medicago sativa and Calendula officinalis was higher than that of leguminous plants(p<0.05), and the chrysanthemum plants were significantly higher than the legumes during severe pollution. ② The increase of TPH concentration could significantly inhibit the root length of compositae plants and the amount of rhizospheric crude-oil degradation bacteria of leguminous plants (p<0.05), while significantly promoted the dry weight of the aboveground part of M. sativa and plant length and dry weight of the underground part of C. officinalis (p<0.05). ③ The results of variance decomposition demonstrated that the interaction effect among the amount of crude-oil degradation bacteria×TPH transfer efficiency and the interaction of plant growth indexes×the amount of crude-oil degradation bacteria were the key factors determining the TPH degradation rate of C. officinalis and Gerbera jamesonii. [Conclusion] The response of 4 indigenous plants to the ecological restoration of crude-oil contaminated soil was varied from species to species, and the compositae plants exhibited better resistance and remediation effect, thus it had certain application potential in Eastern Gansu Province.