PURPOSE: To provide a method for economically producing the ring aralkyl di-substituted product of salicylic acid or its alkyl ester in a good yield by an easy reaction operation and in an ready separation purification operation.

CONSTITUTION: The below-mentioned A and B are contact-reacted with each other in a weight ratio of A/B=4/100 to 27/100. A: a mixture of an aliphatic hydroxy compound and an inorganic acid in a weight ratio of the aliphatic hydroxy compound/the inorganic acid = 2/10 to 25/10. B: a mixture of a vinyl aromatic hydrocarbon and salicylic acid in a mole ratio of the vinyl aromatic hydrocarbon/the salicylic acid : 1.6/1.0 to 2.2/1.0.