Abstract: For ornamental plants, flowering is an important development phase that directly influences the quality of flower. In recent years, researches on plant flowering in the field of molecular biology developed very fast and some break throughs have been obtained. As a second messenger, calcium plays a very important role in plant signal transduction. Many evidences show that calcium may be related to flowering control. The present review attempts to highlight the recent advances in research of calcium signaling and flower development, which contains the following aspects: the role of calcium in the induction of flowering (including photoperiodic induction and vernalization); dynamic distribution of calcium in leaf buds and flower buds during flower bud differentiation; the influence of different calcium concentrations on in vitro flower bud differentiation; the relation between calcium signal transduction and flower senescence.