Disclosed are: an apparatus which enables the easy production of liposomes having uniform particle diameters; and others. Specifically disclosed is a liposome production apparatus comprising: a microtube having a flow path through which a lipid-dissolved solution comprising at least one lipid, water and a water-miscible organic solvent can pass; a housing section in which the microtube is accommodated; and a cooling means for cooling the dissolved solution contained in the microtube in the housing section to a temperature at which liposomes can be produced. The apparatus enables the production of liposomes having uniform particle diameters.