Cross-linked polyolefin thermal contraction film with good printability and preparation method of film

The invention provides a cross-linked polyolefin thermal contraction film with good printability and a preparation method of the film. The cross-linked polyolefin thermal contraction film with good printability comprises an outer layer, a core layer and an inner layer which are stacked in sequence. The preparation method of the cross-linked polyolefin thermal contraction film with good printability comprises the steps that all layers of raw materials are mixed according to a proportion and then melted and plastified separately, and an obtained melt enters a multi-layer parallel conical die head co-extrusion layer to obtain a multi-layer melt; the multi-layer melt is inflated to obtain film bubbles, and cooling and shape setting are conducted to obtain a multi-layer huffing film pipe; the multi-layer huffing film pipe is subjected to air discharging, irradiation crosslinking, heating, sizing cooling, synchronous stretching in the horizontal and vertical directions, heat shape setting, cooling, flattening, edge