Provided is a porous particle which is difficult to cause nonspecific adsorption even though it is a particle of a synthetic polymer system, has a high mechanical strength, and has a large dynamic binding capacity when a ligand is bonded, and a method for producing the same. A method for producing porous particles, comprising the following steps 1 and 2.(Process 1) A process for producing a polymer solution by dissolving at least one polymer selected from a vinyl alcohol polymer and an ethylene-vinyl alcohol copolymer in an aqueous solvent(Step 2) A step of dispersing the polymer solution in a nonaqueous solvent to form a W / O emulsion
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