A positive photosensitive composition includes: (A) a resin that has an acid decomposable repeating unit of formula (I) and increases its solubility in an alkali developer by action of an acid; (B) a compound that generates an acid upon irradiation; (C) a resin that has: a fluorine atom and/or a silicon atom; and a group selected from groups (x) to (z); and (D) a solvent: (x) an alkali soluble group, (y) a group which decomposes by action of an alkali developer and increases a solubility of the resin (C) in an alkali developer, and (z) a group which decomposes by action of an acid, wherein, Xa1 represents hydrogen, alkyl, cyano or halogen, Ry1 to Ry3 each independently represents alkyl or cycloalkyl, and at least two of Ry1 to Ry3 may be coupled to form a ring, and Z represents a divalent linking group.