A plant cultivation device is provided in the present disclosure.The plant cultivation device is included of a case,a temperature control module,and a circulation fan.A cultivation room is formed in the case.The temperature control module is included of a piezoelectricity chip and a heat exchange assembly.The piezoelectricity chip is included of a first surface at inside of the cultivation room and a second surface at outside of the cultivation room.The heat exchange assembly is located on the second surface.The circulation fan is included of an inlet side for cocking air and an outlet side for blowing air,and the inlet side and the outlet side are arranged in the cultivation room.The circulation fan causes circulation air flow in the cultivation room and local temperature differences in the cultivation room are thereby reduced.一種植物種植箱，包含一箱體、一溫控模組及一循環風扇。箱體內形成一栽種室。溫控模組包含一壓電晶片及一熱交換組件，壓電晶片具有位於栽種室外的一第一側面以與第一側面相背且位於栽種室內的一第二側面，該熱交換組件貼附在第二側面。循環風扇附設在熱交換組件，循環風扇具有用以吸入空氣的一進氣側以及用以吹出空氣的一出風側，進氣側及出風側皆位於栽種室內。藉由循環風扇驅動栽種室內的空氣循環流動而降低栽種室內的局部溫差。
