The invention provides a data sending method, device and equipment, and a computer readable storage medium. The method comprises steps of extracting corresponding target data from a preset database according to a data collection demand, generating a target data file, and judging whether the data volume of the target data file exceeds a preset threshold or not; if the target data file exceeds the preset threshold value, storing the target data file in a preset file storage area, and storing the target data file and other files in an isolated mode; and generating a download link according to thestorage area address, adding the download link and the file identifier of the target data file to the preset mail template, generating a target mail, and sending the target mail to the data requester. According to the method, the files with large data volume are uploaded to the storage area, and the download link is generated according to the storage address, so that a data demander can directlyand correspondingly download the target data file from the storage area according to the download link, the success rate of data sending is improved, and the user experience is improved.