In order to improve the low-temperature performance and self-healing performance of waste tyre pyrolytic carbon black modified asphalt, a composite modified asphalt of waste tyre Pyrolytic Carbon Black (PCB) and C9 Petroleum Resin (C9PR) was prepared. Complex modulus, phase angle, rutting factor, and fatigue factor were used to analyse the high and low temperature rheological properties of the modified asphalt samples; And response surface method was used to optimize the parameters of self-healing factors affecting the modified asphalt. The results showed that the addition of PCB and C9PR enhanced the high-temperature performance of asphalt. And the rheological properties at high temperatures increased gradually with the increase of C9PR dosage; The low-temperature rheological properties of PCB/C9PR-modified asphalt showed a trend of increasing and then decreasing with the increase of C9PR dosage. And the best low-temperature rheological performance was achieved with the addition of 2% of C9PR; The optimum self-healing parameters were 63 % of the damage degree, 48 ℃ of the healing temperature and 44 min of the healing time.