An image processing method, a client device, and an image processing system are provided. The method includes: detecting by a client device an image to be processed to obtain image information, and uploading the image information to a server; receiving by the client device at least one case related to the image, the at least one case being obtained by the server according to the image information and sent by the server; and processing the image by the client device according to the at least one case related to the image. The client device includes: a detection module, a receiving module, and a processing module. The system includes the foregoing client device and a server, where the server includes: a receiving module, a selection module, and a sending module. The method not only achieves simple and fast image processing but also improves adjustability during the processing process.