PROBLEM TO BE SOLVED: To provide techniques for directly introducing a phosphorylcholine group into a sugar or sugar derivative.SOLUTION: The phosphorylcholine group-containing sugar derivative has a structure represented by the general formula (1) in the figure, where Rrepresents a prescribed structure, m represents 0 or 1, n represents an integer from 0 to 4, and r represents an integer from 4 to 15.SELECTED DRAWING: None