Phytohormones are a group of small molecular organic substances produced by plant metabolism, which move from the production site to the action site to play a regulatory role. They play a wide variety of critical roles in plant growth and development and response to environmental stress. As early landing non vascular plants, bryophytes have many morphological and physiological characteristics which are different from vascular plants. Most bryophytes have 8 major plant hormones and their derivatives including ABA, JA, ET, SA, Auxin, CK, GAs and BRs, and homologous genes related to plant hormone biosynthesis and signal transduction pathways have been found in bryophytes. At present, there are few studies on bryophyte hormones, and most of them focus on the function of ABA, and lack of research on the regulation mechanism.This review analyzed the similarities and differences of phytohormones between bryophytes and vascular plants in key components of anabolism and signal transduction pathways, and elaborated the roles and regulatory mechanisms of plant hormones in bryophyte growth and development, and abiotic and biotic stress, to provide some research ideas and theoretical reference for the future research of plant hormone regulation mechanism of bryophytes.