Fresh common bean is an important vegetable to supplement plant protein. However， postharvest senescence and lignification seriously lead to the loss of consumer acceptance and eating quality of fresh common bean. To understand the effect of 1-MCP on postharvest lignocellulose of fresh common bean. The effects of 1-MCP on physiology， cellulose， lignin and related enzymes of fresh common bean cv. Baibangdou， Wujinbaibangdou and Qingbangdou were investigated. The results showed that the effects of 1-MCP on postharvest lignocellulose of different varieties of P. vulgaris L. were different. 1-MCP treatment inhibited the conversion of reducing sugar to cellulose by reducing the activities of sucrose phosphate synthase （SPS） and sucrose synthase（SuSy）. 1-MCP treatment reduced the synthesis of lignin monomers by inhibiting the activities of phenylalanine ammonia lyase （PAL）， 4-coumarate： coenzyme A ligase （4CL）， cinnamyl-alcohol dehydrogenase （CAD）， and inhibited the polymerization of lignin monomers by suppressing the peroxidase （POD） activity and the conversion of O2·- to H2O2， and ultimately inhibiting the lignin fibrosis of fresh common bean.