A method for planning sample points for surveying and mapping by an unmanned aerial vehicle, comprising the steps of: acquiring (110, 210) a reference photographing location point corresponding to a region to be surveyed and mapped, establishing a mapping relation between one shooting point in a combined shooting point set and the reference photographing location point, wherein: - the combined shooting point set is a set of shooting points which are preset based on a preset distribution rule, in which a plurality of shooting points are included and each two shooting points have relative direction and relative distance relations therebetween, wherein - the shooting points in the combined shooting point set include a central shooting point and four peripheral shooting points, wherein the peripheral shooting points are four vertices of a rectangle centered at the central shooting point, and - a composite photo of a rectangular shape is obtained by shooting based on all the shooting points in the combined shooting point set; acquiring a photographing parameter of a photographing device carried by the unmanned aerial vehicle, wherein the photographing parameter includes a single-photo photographable region by the unmanned aerial vehicle at a set flying height, and each shooting point is corresponding to a single-photo photographable region; and determining a preset relative positional relation between each two shooting points in the combined shooting point set based on a preset photo overlap degree index and the single-photo photographable region; characterized in that a degree of overlap between each photo shot at each peripheral shooting point and the photo shot at the central shooting point meets the preset photo overlap degree index, and a degree of overlap between each photo shot at each peripheral shooting point is lower than the preset photo overlap degree index, determining (120, 250) a plurality of auxiliary photographing location points corresponding to the reference photographing location point based on the mapping relation and the preset relative positional relation between each two shooting points in the combined shooting point set; and using (130, 260) the reference photographing location point and the plurality of auxiliary photographing location points as sample points for surveying and mapping based on which the unmanned aerial vehicle performs surveying and mapping at the set flying height in the region to be surveyed and mapped. acquiring (110, 210) a reference photographing location point corresponding to a region to be surveyed and mapped, establishing a mapping relation between one shooting point in a combined shooting point set and the reference photographing location point, wherein: - the combined shooting point set is a set of shooting points which are preset based on a preset distribution rule, in which a plurality of shooting points are included and each two shooting points have relative direction and relative distance relations therebetween, wherein - the shooting points in the combined shooting point set include a central shooting point and four peripheral shooting points, wherein the peripheral shooting points are four vertices of a rectangle centered at the central shooting point, and - a composite photo of a rectangular shape is obtained by shooting based on all the shooting points in the combined shooting point set; - the combined shooting point set is a set of shooting points which are preset based on a preset distribution rule, in which a plurality of shooting points are included and each two shooting points have relative direction and relative distance relations therebetween, wherein - the shooting points in the combined shooting point set include a central shooting point and four peripheral shooting points, wherein the peripheral shooting points are four vertices of a rectangle centered at the central shooting point, and - a composite photo of a rectangular shape is obtained by shooting based on all the shooting points in the combined shooting point set; acquiring a photographing parameter of a photographing device carried by the unmanned aerial vehicle, wherein the photographing parameter includes a single-photo photographable region by the unmanned aerial vehicle at a set flying height, and each shooting point is corresponding to a single-photo photographable region; and determining a preset relative positional relation between each two shooting points in the combined shooting point set based on a preset photo overlap degree index and the single-photo photographable region; characterized in that a degree of overlap between each photo shot at each peripheral shooting point and the photo shot at the central shooting point meets the preset photo overlap degree index, and a degree of overlap between each photo shot at each peripheral shooting point is lower than the preset photo overlap degree index, determining (120, 250) a plurality of auxiliary photographing location points corresponding to the reference photographing location point based on the mapping relation and the preset relative positional relation between each two shooting points in the combined shooting point set; and using (130, 260) the reference photographing location point and the plurality of auxiliary photographing location points as sample points for surveying and mapping based on which the unmanned aerial vehicle performs surveying and mapping at the set flying height in the region to be surveyed and mapped.