Liposomes, as a drug targeting carrier, are considered to be the most mature and promising nano-drug delivery system, but the pharmacokinetic properties (targeting ability) of most liposomes are not ideal. Hence, the optimization of the liposomal drug delivery system is still the focus of current research. The combination of multi-disciplinary techniques has made a great breakthrough in the study of targeting of liposomes, but it is still challenging. This paper reviewed the relevant literatures at home and abroad for the past five years to sum...