A kind of regenerant of wasted asphaltum belongs to the manufacturing field of asphaltum-processing accessory material, includes light oil, rosin, anti-aging agent, anti ultraviolet radiation auxiliary agent and so on and is featured by the following composition, in the amounts of weight: between 75% and 90% of light oil, between 10% and 25% of rosin, between 0.1% and 1% of anti-aging agent and between 0.1% and 1% of anti ultraviolet radiation. Aiming to the character of aged wasted asphaltum, the invention adds rosin, anti-aging agent and anti ultraviolet radiation auxiliary agent to light oil, selects and allocates the components reasonably. The invention have the advantage of finding the material easily, low requirement to the producing equipments, easy producing techniques, low cost, convenient use, obvious regeneration, taking action rapidly and long lasting active force. After practical use, the regenerant of wasted asphaltum in the invention can make the aged wasted asphaltum reach the technical indexes of the original asphaltum and the roads paved with it have almost the same life length as those paved with new asphaltum.