The present disclosure relates to the technical field of optics, and discloses a light-emitting module, including: a light-emitting unit layer, including a plurality of light-emitting units, where a light-emitting unit light isolation structure is arranged between two adjacent light-emitting units in part or all of the plurality of light-emitting units. According to the light-emitting module, light emitted by the light-emitting units is prevented from being transmitted in an undesired direction as far as possible by arranging the light-emitting unit light isolation structure between two adjacent light-emitting units in part or all of the plurality of light-emitting units, thereby benefiting improvement of display effect. The present disclosure further discloses a display module, a display screen and a display.