Submarine pipeline protection cover

The utility model belongs to the technical field of submarine pipeline protection, and particularly relates to a submarine pipeline protection cover. The submarine pipeline protection cover comprises a plurality of protection cover bodies and a plurality of horizontal connecting parts, the protection cover bodies are bent to form protection space used for containing submarine pipelines, and semi-positioning protruding blocks are arranged at the two opposite ends of the top face of each protection cover body. A first positioning groove is formed in the top surface of the horizontal connecting part; when the two adjacent protective covers are spliced in parallel, the two adjacent half positioning protruding blocks on the two adjacent protective covers define a complete positioning protruding block, the two adjacent protective covers are sleeved with the horizontal connecting part, and the complete positioning protruding block is positioned in the first positioning groove. According to the submarine pipeline pro