It's a little hard to understand your English. Maybe there is a Firefox forum for your language? Right now, it sounds like this should help https://support.mozilla.com/en-US/kb/Images+or+animations+do+not+show

It is possible that you accidentally clicked the 'Block Images' item in the right click context menu while trying to save an image. Check the image exceptions: Tools > Options > Content: Load Images: Exceptions - See Settings for web content, pop-ups, fonts, and languages

A way to see which images are blocked is to click the favicon (Site Identification icon) on the left side of the location bar and click the "More Information" button. This will open the Security tab of the Page Info window (also accessible via Tools > Page Info). Go to the Media tab of that Page Info window. Select the first image and scroll down though the list with the Down arrow. If an image is grayed and there is a check-mark in the box Block Images from... then remove that mark to unblock the images from that domain.