From mechanics and energetics point of view, this paper proves concisely that th e pressure difference between inside and outside of a crownshaped droplet on t he surface of a condenser is different from that of a spherical droplet in the c ondenser, and indicates its disagreement with that shown in the paper by Min J C , 2002, Acta Phys. Sin. 51 2730. The reason is given in this pap er.