To provide a click feeling generation structure of a tact switch, which can improve click feeling of the tact switch when a push button is pressed, can reduce variation of the click feeling, does not require special cost for a mold for manufacturing the push button and the tact switch, and is favorable in terms of cost.

The click feeling generation structure of the tact switch generates the click feeling when the push button 4 is pressed and the push button 4 is in contact with the tact switch 3. A tip end surface of the tact switch 3 and a tip end surface of the push button 4 are formed in irregular surfaces 3b, 4c. When the push button 4 is pressed, the irregular face 4c of the push button 4 is in contact with irregular surface 3b of the tact switch 3 in an interlocked state and the click feeling is generated.