To evaluate the quality of lipids and their fatty acid compositions in diploid and triploid carps(Cyprinus carpio), we analyzed the compositions of neutral lipid, phospholipid and glycolipid, and fatty acid contents of each lipids in these carp muscles. Total lipid contents of diploid carps, nonspawning season and spawning season, and triploid carp were $2.5~3.0\%,;1.4~1.9\%;and;2.4~3.1\%$, respectively. Regardless of belly and dorsal muscles, diploid carp of nonspawning season and triploid one were higher in neutral lipid, but lower in glycolipid and phospholipid than those of diploid one of spawning season. The neutral lipid and phospholipid were mainly consisted of triglyceride($66.9~86.1\%$), and phosphatidyl-choline($55.6~62.9\%$), respectively. In fatty acid compositions of total lipid, triploid carp showed higher content in monoenes such as 16: 1, 18: 1, but lower in polyenes such as 22:6 than those of diploid carp. The major fatty acids in total lipid were 18:1, 16:9, 18:2, 18:3 and 16:1 in order. The fatty acid compositions of neutral lipids showed similar trend to those of total lipid, and the major fatty acids in phospholipid were 16:0, 18:1, 18:2 and 22:6, These fatty acid compositions of neutral lipid, glycolipid and phospholipid were slightly difference between dorsal and belly muscles in all the carps.