To provide a method for producing a higher secondary alcohol ethoxylate-sulfated salt excellent in hue and having a high purity in a high yield by performing the sulfating reaction of the higher secondary alcohol ethoxylate.

This method for producing the higher secondary alcohol ethoxylate-sulfated salt expressed by general formula (2) [wherein, (x+y)=5 to 17; (n) is an integer of ≥0; (p) is a valence number of M; and M is an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a substituted ammonium ion] is provided by forming the sulfated compound by sulfur trioxide which is a sulfating agent, and neutralizing with a basic substance within 30 min after the production.