ABC transporter (ATP-binding cassette transporter) is one of the largest protein families. It is widely found in eukaryotes and prokaryotes, and has attracted more and more attention in plant field in recent years. As the transportable substrates of ABC transporters are diverse, they can widely participate in the developmental processes of plant. Meanwhile, ABC transporters also have great effects in the growth of plant flower organs and the formation of ornamental characteristics of plants. In this study, the characteristics and subfamily classification of ABC transporters were summarized. In addition, the functions of ABC transporter family in the growth of flower organs and their ornamental characteristics were highlighted, the potential application of ABC transporters in improving plant ornamental traits was also explored, which could supply useful strategies for improving the plant ornamental traits.