The invention discloses a browser and system for download and a download method, and relates to the field of internet technologies. The browser for download comprises: a download starting unit configured to start data download of a browser login user at the browser side; a prompt unit configured to prompt to save downloaded data into a network storage server bound to the browser login user at the browser side; a transmission unit configured to receive a download instruction from the user, and upload the data downloaded at the browser side to the network storage server bound to the browser login user; and a reception unit configured to receive address information of the uploaded downloaded data at the network side fed back by the network storage server. The browser, system and method may effectively avoid the occurrence of a situation of repeated download, and improve the efficiency of a user obtaining and using network data.