The invention relates to a low-yellowing organic silicon softener, a preparation method and an application thereof. The schematic constitutional formula of the low-yellowing organic silicon softener provided by the invention is FORMULA, and the invention also discloses a preparation method and an application thereof. The softener provided by the invention has cheap and easily-obtained material and simple synthetic process; the fabric after processed by using the softener provided by the invention has the soft and smooth effects after the treatment of amino silicone oil, and also adds yellowing-proof capacity and fabric durability; moreover, the fabric is not easy to drop when washing.