A full-automatic drip irrigation system based on a biological technology. A notch is formed in each of the upper end and the lower end of the front surface of a C-shaped base (1), and a rubber washer a (12) and a rubber washer b (13) are correspondingly embedded in the notches. A fastening bolt (4) is fixedly screwed to one side of the upper end of the front surface of the C-shaped base (1). A syringe (2) embedded with a notch is disposed on each of the upper end and the lower end of the front surface of the C-shaped base (1), a syringe needle (3) is screwed to the bottom of the syringe (2), a syringe cap (5) is disposed on the top of the syringe (2), and a valve inside (6) is disposed at the center position of the syringe cap (5). The C-shaped base (1) is empty in the back and is provided with a groove, a guide rail bar (9) is fixed in the groove, a slide block (10) is mounted on the guide rail bar (9), and the slide block (10) is fixed to a wall plate (7) by means of a bolt. The device has a simple structure, and a plant nutrient solution is easy to inject the full-automatic drip irrigation system is suitable for the split-style nutrient solution injection for indoor hydroponic plants, and resolves the defects of the impact on nice appearance of a work and the prevention to the growth of plants due to propagation of green algae when the nutrient solution is exposed to light. The structure of the device is firm and is unlikely to be damaged.Linvention concerne un système dirrigation goutte à goutte entièrement automatique basé sur une technologie biologique. Une encoche est formée dans chacune de lextrémité supérieure et de lextrémité inférieure de la surface avant dune base en forme de C (1), et une rondelle en caoutchouc a (12) et une rondelle en caoutchouc b (13) sont incorporées de manière correspondante dans les encoches. Un boulon de fixation (4) est vissé à demeure sur un côté de lextrémité supérieure de la surface avant de la base en forme de C (1). Une ser
