The invention discloses an image acquisition method, device and terminal. The image acquisition method includes the following steps that: responding to an instruction which is triggered by a user and is used for acquiring an image to be acquired so as to acquire actual feature information of the image to be acquired; calling preset feature information of a reference image which is corresponding to the image to be acquired; comparing the actual feature information of the image to be acquired with the preset feature information of the reference image so as to identify the similarity of the actual feature information of the image to be acquired and the preset feature information of the reference image; and performing image acquisition on the image to be acquired according to the similarity of the actual feature information of the image to be acquired and the preset feature information of the reference image. According to the image acquisition method of the invention, preset feature information guidance is utilized to perform image acquisition, and therefore, the accuracy of the image acquisition can be improved, and the efficiency of the image acquisition can be improved, and troubles caused by repeated acquisition of the same image can be avoided.