The invention relates to a virtual network survivability mapping method capable of distinguishing the maximum sharing capacity. Compared with the prior art, the method has the advantage that the defect that the survivability mapping method cannot distinguish the sharing capacities is solved. The method comprises a node mapping step that all virtual nodes carry out node connection mapping with corresponding physical nodes under the condition that geographical locations and exchange capacities are satisfied; a link mapping step that mapping is carried out on each virtual link based on the demand that distribution of protection resources should not exceed the limit to the maximum connection quantity epsilon in a spectrum clearance, and distribution is carried out on adjacent continuous idle spectrum block resources if the fact that the protection connection quantity still exceeds the maximum sharing degree of the link itself occurs. According to the method, through adoption of a shared link protection mode, the maximum sharing capacity of the spectrum clearance is distinguished, and therefore, the competitiveness of damaged service to the protection spectrum resources is reduced.