Abstract: The Bivalved bradoriid arthropod Kunmingella douvillei is one of the most species from the Chengjiang Lagersttte in the Lower Cambrian. Kunmingella douvillei of newly discovered egg-bearing showed that animals appeared reproductive strategy of incubation and K-selection strategy in ecology in the Cambrian from 520 million years ago. It is response to soft clay base of the Cambrian Marine.

Key words: Chengjiang Lagersttte, Kunmingella douvillei, egg-bearing, reproductive strategy, Qiongzhusian