As a part of analyzing growth in all species of the ash-gray leaf bug(Piesmatidae), this study was initiated to analyze the changing pattern of the growth of the eight body parts such as body length, head width, antenna, pronotum width, rostrum, foreleg, midleg, hind leg in the postembryonic development of Piesma maculata. Applying two equations, y=a＋bt＋$ct^2$ for the absolute growth and y=b$chi$$^{alpha}$ for the relative growth to the measurements, the results are summarized as follows. (1) The growth quantify of rostrum was increased in concave shape and that of body length, head width, pronotum width, antenna, fore leg, mid leg and hind leg was increased in convex pattern. Rostrum showed the slowest increase and head width, antenna, pronotum width, mid leg, fore leg, hind leg and body length followed in that order. (2) The smallest ratio of growth quantity is rostrum(1.9396 times), and head width, antenna, Pronotum width, fore leg, mid leg, bo요 length and hind leg (3.6539 times) followed in that order. (3) The growth rate of rostrum showed a decrease pattern. However body length, head width, Pronotum width, antenna, fore leg, mid leg and hind leg showed a increase pattern. (4) The specific growth rates of antenna and rostrum were decreased. But that of body length, head width, pronotum width, fore leg, mid leg and hind leg were increased at first and decreased later. (5) In the relative growth of each body part to body length, hind leg, fore leg, mid leg, pronotum width, antenna, head width, rostrum showed the negative allometry. Of them, rostrum showed the least coefficient of relative growth.lative growth.