To provide a toilet seat device for reducing time and labor in detecting a pulse wave of a person.SOLUTION: A toilet seat 100 includes: a toilet seat 20; and a pulse wave detection sensor 10 for detecting a pulse wave of a person sitting on the toilet seat 20. In the toilet seat 20, the pulse wave detection sensor 10 is arranged between a seat surface member and a toilet bowl side member in the toilet seat 20.SELECTED DRAWING: Figure 1【課題】人の脈波検知の手間を削減できる便座装置を提供する。【解決手段】便座装置100は、便座20と、便座20に座った人の脈波を検知可能な脈波検知センサ10と、を備え、脈波検知センサ10は、便座20において、便座20の座面部材と便鉢側部材との間に配置される。【選択図】図1