The present disclosure provides an inkjet assembly, an inkjet printing apparatus and an inkjet printing method for use in preparation of a display component. The inkjet assembly is for use in an inkjet printing apparatus, including a jet printing member having a first surface. A main inkjet channel, a liquid-phase channel in communication with the main inkjet channel, and a gas-phase channel in communication with the main inkjet channel are formed in the jet printing member. An axial direction of the liquid-phase channel intersects an axial direction of the main inkjet channel, and an axial direction of the gas-phase channel intersects the axial direction of the main inkjet channel. An end opening of the main inkjet channel is formed as a nozzle on the first surface.