I use a Canon 5D camera, and the photos I take are always red. I adjusted the white balance, but it still doesn't work.

There are many factors involved in this question, 1, do you use a flash, which requires correct exposure to accurately measure the white balance? 2. Is your monitor off color, which requires proofreading the monitor, preferably using a crt monitor, and the color of the liquid crystal is inaccurate! 3, everyone's ability to identify colors is different, leading to the same color, some people think it is blue, and some people think it is red!