Abstract: According to our investigation in forest of Jiangsu Province, we have found that favourable conditions in water distribution and height differences in the forest of Jiangning-Lishui hill regions,the trap-lamps can be used to form an ecological control model of forest pests. Results show that the marked pine-moth and other phototactic moths can be attracted to the trap-lamp-water from 400m, 800m, and 1100 m away. The average residual eggs of a female are 82. 3. During the emergence period of pine-moth, about 5. 10 kg moths fly and drop into the lamp-water per night. The moths and their eggs are good forages for the fish. They contain high protein and essential amino acids.