Accumulation of phosphorus-32 or sulphur-35 in the lesions of tobacco anthracnose (Colletoirichum sp.) was studied. Phosphorus-32 accumulated more conspicuously and faster than sulphur-35 in the affected lesion. The accumulation types of phosphorus-32 were classified into three types: spot type, simple ring type, and concentric ring type. There were no relations between the optical aspects of lesions and the accumulation types.