The present invention is a nozzle cap which has a foaming cylinder arranged on the front face of a nozzle port of a nozzle body, wherein an inner peripheral uneven portion is formed on the inner peripheral wall of the foaming cylinder. The uneven portion formed on the inner peripheral wall of the foaming cylinder complicatedly reflects the liquid injected from the nozzle port as compared with a mere cylindrical foaming cylinder to thus effeciently foam the liquid.
