Brassica oleracea vegetables are important vegetative crops. Premature bolting and mismatched flowering time between two parents are commonly occurred during the process of production and breeding in B. oleracea vegetables. Improving bolting resistance of B. oleracea vegetables by molecular design breeding will resolve these problems. However, diverse subspecies of B. oleracea vegetables exhibit various flowering times, and research on the genes regulating bolting and flowering is scattered. This article summarized genes and variants for flowering pathways which are mainly involved in gibberellin pathway, vernalization pathway, and photoperiod pathways of B. oleracea vegetables on the basis of five main flower regulation pathways in plants. And a gene network that regulates bolting and flowering of B. oleracea vegetables is constructed, which will provide a valuable reference for improving bolting resistance of B. oleracea vegetables.