A closed-type hollow potting humidity stability control structure is disclosed, which comprises a pot body unit, a guide tube and a ventilation unit. The pot body unit comprises an inner pot body having a concave accommodating region, an outer pot body utilized for supporting the inner pot body, a hollow water storage space region sandwichingly arranged between the inner pot body and the outer pot body, and a water permeation orifice communicating the accommodating region with the water storage space region. The guide tube therein is formed with a hollow channel that is provided with an air inlet end and an air outlet end, in which the air inlet end and the air outlet end are respectively communicated to an exterior and interior of the water storage space region of the pot body unit. The ventilation unit, which comprises at least more than one microfluidic channel, is configured in the guide tube and at least one end thereof is located inside the accommodating region of the pot body unit, thus to make the ventilation unit keep contact with the soil located in the accommodating region of the pot body unit.本發明包括有盆體單元、導管及透氣單元所組成,其中:盆體單元包括一具有凹陷狀容置區域的內盆體、一支撐內盆體用的外盆體、一夾置於外盆體與內盆體之間的中空狀儲水空間區、以及一連通容置區域至儲水空間區之間的滲水孔;導管,其內形成有一中空狀的通道,該通道的入氣端及出氣端分別連通至盆體單元之儲水空間區的外側及其內部之用;透氣單元,其至少有一個以上的微流道,而該透氣單元係組設於導管處,且使該透氣單元的至少一端能位於盆體單元的容置區域內,並使透氣單元能與容置區域內的土壤保持接觸。1‧‧‧盆體單元10‧‧‧內盆體11‧‧‧外盆體12‧‧‧儲水空間區13‧‧‧容置區域14‧‧‧滲水孔2‧‧‧導管20‧‧‧通道201‧‧‧入氣端202‧‧‧出氣端3‧‧‧透氣單元30‧‧‧微流道4‧‧‧土壤5‧‧‧注水單元50‧‧‧注水基座501‧‧‧外螺紋502‧‧‧內螺紋503‧‧‧注水流道51‧‧‧止漏元件52‧‧‧蓋體
