Lighting device is planted in a plant, is built the indoor plant of what one and is planted, has an illumination module and an electric power mould group. The illumination module includes an assembling seat, and one is arranged in the what assembling seat and has lighting unit of the plural illuminating part energization Hou to an at least plant throw light. The electric power mould group is arranged in the what assembling seat, it include a power input line, one, which connects the power input line, receives the external power to carry out the annular transformation mould group of electrical power conversion, one connects the annular transformation mould group and the power input lines of the lighting unit, the annular transformation mould group has an annular core, the armature winding and the winding what annular core that connect on the one winding what annular core and with the power input line and secondary windings of the magnetic coupling output without harmonic alternating current electric power to the power input lines is formed with the armature winding.一種植栽照明裝置，建置於一室內植栽，具有一照明模組以及一電力模組。該照明模組包含有一組裝座，一設置於該組裝座上且具有複數發光件通電後向至少一植物投射光線的照明單元。該電力模組設置於該組裝座上，包含有一電力輸入線，一連接該電力輸入線接受該外部電力以進行電力轉換的環形變壓模組，一連接該環形變壓模組及該照明單元的電力輸出線，該環形變壓模組具有一環形鐵芯，一繞設於該環形鐵芯上並與該電力輸入線連接的初級繞組，以及一繞設於該環形鐵芯且與該初級繞組形成磁耦合輸出無諧波交流電力至該電力輸出線的次級繞組。
