PROBLEM TO BE SOLVED: To obtain a high-voltage generating device that can accurately control at least one of time to apply a voltage to a load and a value of a voltage to be applied, and to provide a cooker.SOLUTION: The high-voltage generating device includes: a first electrode; a second electrode provided in a position facing the first electrode; a power supply for applying a voltage to the first electrode; and an electrical discharge detector for detecting whether there is electrical discharge that is generated when a voltage is applied to the first electrode. Depending on whether there is electrical discharge that is detected by the electrical discharge detector, any one or both of time to apply a voltage by the power supply and a value of the voltage to be applied are controlled.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2020,JPO&INPIT【課題】負荷に電圧を印加する時間と印加する電圧の値の少なくとも一方を精度よく制御することのできる高電圧発生装置および調理器を得る。【解決手段】第1電極と、第1電極と対向する位置に設けられた第2電極と、第1電極に電圧を印加する電源と、第1電極に電圧が印加されたときに発生する放電の有無を検出する放電検出部とを備え、放電検出部により検出される放電の有無に応じて、電源が電圧を印加する時間と印加する電圧の値とのいずれか又は両方が制御される。【選択図】図2