In the study of quantum resource theories

one of the central problems is to provide an operational meaning for a given resource. In the provided quantum information processing task

every resource state provides an advantage compared to the case where all resourceless states are used. Recently

Theurer et al. [T Theurer

et al. Phys Rev Lett 119

230401 (2017)] introduced a rigorous resource theory framework for the quantification of superposition through generalizing of resource theories of coherence. Under the framework

we show that every one-qubit superposition state provides an advantage in different channel discrimination

quantified in terms of the Holevo-Helstrom theorem. Then

the maximum probability of success in superposition-assisted channel discrimination has been calculated

which is larger than the value of maximum probability of success in no superposition-assisted channel discrimination. Our results contribute to understanding the discrimination relevance of channels:assisting by the unique coherent state

different kinds of channels are most distinguishable

and different coherent channels are more distinguishable than different incoherent channels.