Expansion screw transplanting and fixing device for blocky coral

The utility model discloses a bulky coral expansion screw transplanting and fixing device in the field of marine ecological restoration, which comprises a transplanting base and a fixing component, and the transplanting base is provided with a fixing hole for the fixing component to pass through; the fixing assembly comprises an expansion part and a fastening part, a threaded hole is formed in the expansion part, the fastening part is in threaded connection with the expansion part, the expansion part can penetrate through the fixing hole to be inserted into the ground, and the fastening part can open the expansion part through the threaded hole. According to the scheme, by means of the expansion screw principle, the expansion part of the fixing assembly is inserted into the loose soil, the fastening part is used for expanding the expansion part, the fastening part and the expansion part are made to make contact with the loose soil, the fastening part vertically supports the transplanting base, the contact are