The present invention is directed to a dendritic polyamidoamine phthalocyanine derivative which is useful as, for example, a fluorescent material or a photodynamic therapeutic drug for cancer. The derivative is represented by the following formula (1): (wherein each member of one to eight of R1 to R8 is a polyamidoamine dendron represented by the following formula (a): (wherein p is a number from 1 to 4; R9 represents —NH(CH2)tNH2 or OR10 (wherein R10 represents an alkyl group); and each of l, m, q, and t is a number from 1 to 8), and each member of the remainder represents a hydrogen atom; M represents a metal atom having a valency of two or more; and a ring marked with (N) is a benzene ring, a pyridine ring, or a pyrazine ring).