To provide a method for producing a polyfunctional (meth)acrylate-like compound containing a cross-linkable hydroxyl group easily and at a low cost from a safe raw material.

The method for producing a hydrophilic monomer represented by formula (3): (wherein, R1 indicates a hydrogen atom or a 1-10C aliphatic hydrocarbon group; m indicates an integer of 1 or more; k indicates an integer of 0 or more; m+k=n, n indicates an integer of 1 or more; and the disposition order of the unit containing m hydroxyl groups and the unit containing k ester groups is optional) is characterized by reacting a compound represented by formula (1): (wherein, n indicates the same as above) with a compound represented by formula (2): (wherein, R1 indicates the same as above; and R2 indicates a 1-20C hydrocarbon group).