To provide a liquid treatment apparatus and a liquid treatment method which can achieve stabilization of discharge efficiency and improvement therein.

A liquid treatment apparatus 1 includes a channel 11a in which liquid including gas flows, a pair of electrodes 12 and 13 that are provided in the channel 11a and cause discharge in the liquid, and a turbulent flow generation part 16 that generates turbulent flow in the liquid between the pair of electrodes 12 and 13. Thus, it is possible to achieve stabilization of discharge efficiency and improvement therein.