Preparation method of silica gel key with crystal key

The embodiment of the invention discloses a preparation method of a silica gel key with a crystal key. The preparation method comprises the following steps: step 1, preparing the crystal key and a silica gel panel; 2, if the character to be printed is a colored character, performing silk-screen printing of colored ink in a character area on the back surface of the crystal key for baking, and performing silk-screen printing of ground color ink in a non-character area; if the to-be-printed character is a white character, carrying out silk-screen printing of ground color ink in a non-character area; 3, silk-screening a layer of white UV base oil, baking in a tunnel furnace, and carrying out UV light curing; and 4, coating a surface treating agent on the silica gel panel, then coating a layer of instant adhesive, and adhering the crystal keys to the silica gel panel. According to the crystal key, the white UV base oil is printed on the ink layer in a silk-screen mode, the adhesive force of the ink layer is improv