A kind of light source adjustment structure of houseplant culture apparatus,Main system at least has in the default hanging plane of hanging ring group setting what one of plural number suspension hanging ring with one,And in the main support combination what hanging plane,The what main support is concavely provided with plural location hole,One disk line seat system is pivoted on the what main support,The what disk line seat what is equipped with the setting element of tool protrusion elasticity with respect to the side of main support,Another what disk line seat peripheral side is equipped with an at least wire casing,Plural number by the connection rope system of each suspension hanging ring on the wire casing of the one ends wound what disk line seat,The other end system connection what one of each connection rope is combined with the overhead support of plural light source assembly,Using the disk line seat just,Reverse turn,The drop height of the overhead support can be changed via each connection Suo Liandong overhead support,And the positioning hole of the setting element inlay card what difference,The disk line seat can be made to interlock overhead support positioning one fixed height of what.一種室內植物培養裝置之光源調整結構,主要係以一至少具有複數懸掛吊環之吊環組設置於一預設吊掛平面上,並以一主支架結合於該吊掛平面上,於該主支架上凹設有複數定位孔,一盤線座係樞設於該主支架上,於該盤線座於相對主支架之一側設有具凸出彈性之定位元件,另於盤線座外周側環設有至少一線槽,複數通過各懸掛吊環之連結索係以一端纏繞於該盤線座之線槽上,各連結索之另一端係連結於一結合有複數光源組件之吊掛支架,利用該盤線座正、反轉動,可經由各連結索連動該吊掛支架改變該吊掛支架之垂吊高度,而該定位元件嵌卡於不同之定位孔內,可使該盤線座連動該吊掛支架定位於一固定高度。