How to download the electronic invoice application system by computer Hello, Yunnan, open the website of the IRS, and then click the download area under the tax service box; Click the download area under the tax service box, and then click the software download on the left side of the page; Click the software download on the left side of the page to find the electronic (network) invoice application system of the State Administration of Taxation, and click Download; After downloading, double-click the downloaded software; After double-clicking, the page will pop up "System Detection" and wait for a moment; After waiting for a moment, the system will pop up the installation interface, and click Quick Installation; Click Quick Install, wait a few minutes, and the page will pop up with the installation completed. Click Experience Now. Click Experience Now, enter your user name and password, click Login, and you can issue a general machine invoice.