Provided are a method for determining distribution information and a control method and device for an unmanned aerial vehicle. The control method comprises: acquiring image information of a target region (S102); inputting the image information to a predetermined model for analysis, so as to obtain distribution information of a target object in the target region (S104), the predetermined model being obtained by training with multiple data sets, and each data set in the multiple data sets comprising: sample image information of the target region, and a label used to identify distribution information of the target object in the sample image information; and controlling, according to the distribution information, the unmanned aerial vehicle to spray pesticide on the target object (S106). The present invention resolves issues, such as pesticide waste and residue, caused by difficulty to distinguish crops from weeds.
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