To explore the interaction among rocks, life and climate, we will to hold the 4th International Conference of Geobiology in 2017 at Wuhan, central China. Interaction and co-evolution between organisms and environments at critical periods of geological history and in modern days will be the subject of this meeting. Tentatively, symposia including one session on the deep biosphere are suggested, and more session proposals are encouraged. The deadline for abstract submission is April 1, 2017.