Disclosed are an unreal engine-based automatic light arrangement method and apparatus, a device, and a storage medium. The method includes: acquiring a house type model and basic data imported into an unreal engine, the basic data being data obtained after a house type image file of the house type model is parsed (S101); on the basis of first object data and second object data in the basic data, respectively creating an indoor light source and a light-supplementing light source in a room region of the house type model (S102); creating an outdoor light source for the house type model, and creating a later volume on an outer side of the house type model by using a preset light arrangement rule, such that the house type model is wrapped in the later volume (S103); and adjusting parameters of the later volume, and setting light tracking parameters in the later volume, so as to render light arrangement of the house type model (S104). In the described method, automatic light arrangement can be realized, a degree of manual participation is reduced, an illumination rendering effect is more realistic and natural, an influence on indoor illumination of natural light is fully taken into consideration, and the method is suitable for most scenarios.