The invention discloses a method for measuring the bonding capacity between two parallel limited-thickness coating films, and relates to the technical field of measurement. The method comprises the following steps: establishing an analytic expression of the bonding capacity between unit areas of two parallel graphene films according to the Van der Waals' force between the coating and the film andby utilizing continuous mechanical theory; determining the balance distance between the two parallel graphene films as the minimal position of the interface bonding capacity, deriving the analytic expression of the bonding capacity between the unit areas of parallel graphene films at the minimal position to acquire graphene film minimal bonding capacity; establishing an analytic expression of thebonding capacity between the unit areas of two parallel limited-thickness coating films by utilizing the continuous mechanical theory. The problem that the Van der Waals' force at the interface position is regarded as a constant value is solved, and the effects of improving the measuring accuracy of the bonding capacity between the unit areas of two parallel limited-thickness coating films, reducing the measuring cost and reducing the complex degree are achieved.