A sanitary washing apparatus having a bidet washing function for jetting water at private parts of a female user, the apparatus includes: a nozzle including a jetting port configured to jet water; a swirling chamber and a communication channel for jetting water as a hollow-conic-shape liquid film flow at the private parts of the female user from the jetting port; and a fluid squiring device for generating an intermittent granular flow of granular water balls so as to fill inside the liquid film before the liquid film flow impinges on the private parts.