Method for producing surface-treated steel sheet, surface-treated steel sheet, and organic resin coated metal container

A method for producing a surface-treated steel sheet comprising:

• forming an Al oxygen compound layer which is a layer mainly composed of an oxygen compound containing Al onto a tin-plated steel sheet by conducting cathode electrolytic treatment using an electrolytic treatment solution containing an Al ion and nitrate ion to the tin-plated steel sheet,
• wherein the electrolytic treatment solution does not contain F ion and where an amount of the nitrate ion contained is 15,000 to 25,000 ppm by weight,
• the cathode electrolytic treatment is conducted under a condition of an amount of electricity of 0.4 C/dm2 to 2.8C/dm,
• the Al oxygen compound layer has an Al amount of 2 to 11.8 mg/m2, and
• a particle diameter of particles of an Al oxygen compound which form the Al oxygen compound layer is 50 nm or less.