Abstract: The present invention discloses a self-infiltration irrigation, assemblable, obliquely inserted modular multifunctional wall greening apparatus comprising a pot body and a case body. A face having a hollowed-out portion allowing the pot body to be inserted into the case body is a front panel. The bottom of the pot body faces down to be obliquely inserted into the interior of the case body from the hollowed-out portion of the front panel. The lower end of the bottom of the pot body inserted into the case body is provided with a water inlet. The upper part of the case body has a water inlet part, the lower part thereof is provided with a water outlet, and the water inlet of the pot body is located between the water outlet and a bottom plate of the case body.