To analysis the fishery catch, catch per unit sffort, and the oscilla between years, We collect fishery log book from Toucheng Sakura shrimp production and marketing group, and purchase number from processing industry. We also still collaborate with Toucheng Sakura shrimp production and marketing group, and continued record the fishery catch, fishery biology data of Sergestes lucens in I-lan Bay, to promote the sustainable operation of the present fishery resources.