Abstarct: Abstract Asphalt mixtures have the potential to repair part of their cracks due to their self-healing capability. However, different factors such as aging can affect the quantity and quality of this effectiveness. In this regard, considering to field aging effects is significantly important. Therefore, in the present study, in order to investigate the effects of long-term field aging on self-healing capability, several sections of asphalt pavement with similar mixing designs, which had a service life of 7, 10 and 11 years, tested with Fourier transform infrared spectroscopy (FT-IR).Then, the middle part of the asphalt laxyers is cored and their self-healing capability were measured by the semi-circular bending test (SCB). The samples were repaired using draft oven heating at three temperatures of 35, 60 and 85 ° C at intervals of 8, 16 and 24 hours. Also, the three-point beam bending test were used to investigate the effects of aging on the healing capability in the thickness of the asphalt laxyer. The results showed that in proportion to the aging changes in thickness of asphalt laxyer, its healing capability is also affected. Asphalt samples with service life 11-year showed a difference of nearly 10% between the surface self-healing index and the laxyer depth. It was also found that the self-healing capability of the middle part of the asphalt laxyers in the period of 7 to 11 years, was almost constant and averaged 35%. baxsed on the observation, it can be concluded that the changes in the concentration index of the Carbonyl chemical functional group (CFGC) are directly related to the changes in the ability to repair asphalt pavements in its thickness and passage of service time and can be used as an indicator.