A system comprising a first terminal, a second terminal, and a server, wherein the first terminal is configured to: determine an original image and a save path of the original image, whereby the save path includes an identification of the first terminal and a storage address of the original picture on the first terminal; acquire a sample image corresponding to the original image, wherein the sample imageis obtained from the original image by adjusting at least one image parameter, the sample image data size being smaller than the original image data size; and send the sample image and the save path of the original image to the server; wherein the server is configured to: store the save path of the original image; send the sample image to the second terminal; in response to an image acquisition request from the second terminal, acquire the original image based on the stored save path; and send the acquired original image to the second terminal; and wherein the second terminal is configured to: display the sample image; acquire an image acquisition instruction from a user; send an image acquisition request to the server; and display the original image; wherein the second terminal is configured to acquire the image acquisition instruction by detecting an operation on a preset button on said second terminal or on user, thereby the sample image by a determining whether the operation on the sample image satisfies a preset rule, the preset rule specifying a number of clicks on the sample image by the user; and when the operation is determined to satisfy the preset rule, determining that the image acquisition instruction is received. wherein the first terminal is configured to: determine an original image and a save path of the original image, whereby the save path includes an identification of the first terminal and a storage address of the original picture on the first terminal; acquire a sample image corresponding to the original image, wherein the sample imageis obtained from the original image by adjusting at least one image parameter, the sample image data size being smaller than the original image data size; and send the sample image and the save path of the original image to the server; determine an original image and a save path of the original image, whereby the save path includes an identification of the first terminal and a storage address of the original picture on the first terminal; acquire a sample image corresponding to the original image, wherein the sample imageis obtained from the original image by adjusting at least one image parameter, the sample image data size being smaller than the original image data size; and send the sample image and the save path of the original image to the server; wherein the server is configured to: store the save path of the original image; send the sample image to the second terminal; in response to an image acquisition request from the second terminal, acquire the original image based on the stored save path; and send the acquired original image to the second terminal; store the save path of the original image; send the sample image to the second terminal; in response to an image acquisition request from the second terminal, acquire the original image based on the stored save path; and send the acquired original image to the second terminal; and wherein the second terminal is configured to: display the sample image; acquire an image acquisition instruction from a user; send an image acquisition request to the server; and display the original image; display the sample image; acquire an image acquisition instruction from a user; send an image acquisition request to the server; and display the original image; wherein the second terminal is configured to acquire the image acquisition instruction by detecting an operation on a preset button on said second terminal or on user, thereby the sample image by a determining whether the operation on the sample image satisfies a preset rule, the preset rule specifying a number of clicks on the sample image by the user; and when the operation is determined to satisfy the preset rule, determining that the image acquisition instruction is received.