You can eat together, but it depends on how you do it. Because spinach contains a lot of oxalic acid, improper cooking methods will affect the absorption of some calcium ions in calcium-containing foods such as meat, milk and eggs. Because oxalic acid in spinach will combine with calcium ions to form a crystal called calcium oxalate, which will be deposited and hinder the absorption of calcium ions. Therefore, it is suggested to "copy" spinach with boiling water, remove oxalic acid and then process it with other materials.