A cartilage and bone morphogenetic repairing composition which contains a bone morphogenetic protein and a polyoxyethylene-polyoxypropylene glycol is disclosed. It is preferable that the molecular weight of a polyoxypropylene, i.e., a component of said polyoxyethylene-polyoxypropylene glycol, is in the range of about 1,500-4,000 and the weight ratio of ethylene oxide is in the range of 40-80%/molecule, and a concentration of said polyoxyethylene-polyoxypropylene glycol in an aqueous solution is about 10-50%. The composition may be applied in a cartilage and bone morphogenetic method without a surgical operation and comprises a bone morphogenetic protein and a carrier which has a high bio-absorption, a good affinity to the bone morphogenetic protein and is capable of temperature dependent gel-sol reversible transition. The composition may conveniently be applied locally to the site of a bone fracture or bone defect.