The doping effect of different carbon source on the properties of MgB2 tapes was compared using three typical dopants, nano-C, C60, and C9H11NO. It is found that C60 doped samples showed the highest carbon substitution ratio and resistivity, with the lowest Tc. For the nano-C doped samples, Tc did not drop so significant, which is only 2K lower than that of the pure ones. Compared to C60 and C9H11NO doped samples, the nano-C doped samples show a lower Jc value at 5K. On the other hand, the C9H11NO doped samples show a high Jc value at both 5K and 20K. This is a representative demonstration to the complex affecting factors on the Jc–H property of MgB2 tapes. Detailed mechanism for the property difference in MgB2 induced by different chemical doping is discussed based on the systematically examined results.