The invention discloses a watermark embedding method. The watermark embedding method comprises the following steps: acquiring a pre-generated basic watermark graph and pre-generated ciphertext information; wherein the basic watermark pattern is a snowflake-shaped pattern; filling the basic watermark pattern according to the ciphertext information to obtain a watermark pattern; arranging the watermark patterns according to a preset rule to generate a watermark layer; and overlapping the watermark layer and the file in which the watermark is to be embedded. The invention also discloses a watermark embedding device, equipment and a computer readable storage medium, which can effectively improve the resistance of the watermark to geometric attacks and copying attacks, so that the watermark canstill reduce the watermark information with high precision after the watermark is subjected to the geometric attacks or the copying attacks.