Solidified soil blowing and filling device of offshore wind power foundation and construction method of solidified soil blowing and filling device

The solidified soil blowing and filling device comprises a floating assembly, a sinking assembly, a solidified soil conveying pump and an air inlet pump, the floating assembly comprises an upper mounting base and a floating air cushion, the floating air cushion is annularly arranged on the periphery of the offshore wind power foundation, the upper mounting base is detachably mounted above the floating air cushion in a limited mode, and the sinking assembly is arranged on the upper mounting base; the sinking assembly comprises a lower lifting appliance and a lower air cushion, the lower lifting appliance is detachably installed on the lower air cushion in a limited mode, the lower lifting appliance is annularly arranged on the outer side of the upper installation base, and the solidified soil conveying pump and the air inlet pump are arranged on the installation ship body. The seabed solidified soil laying device has the advantage that refined and comprehensive laying of seabed solidified soil can be achieved.