was staged by the method of Darch. We then measured the three digestive enzymes in hepatopancreas throughout the molt cycle. Based on the setogenesis and the morphological changes to the epidermis of the third maxilliped, we identified four molting periods (postmolt, intermolt, premolt and ecdysis). In addition, the premolt period was further divided into three substages (D₀, D₁, and D_3-4). Both amylase and tryptase activities increased in the hepatopancreas during the A-B stages, peaking in the early premolt D₀ stage (3_{<0.05). There were no obvious changes in peptase activity during the majority of the molt cycle, though levels were significantly lower ( stage. In summary, we identified five periods (C, D0, D1, D3-4, A-B)in the molt cycle of during which the activities of amylase, trypsase, and peptase changed periodically.}