The invention provides a softening agent containing amino silicone oil. The softening agent is prepared from the following ingredients in parts by weight: 30 to 80 parts of amino silicon oil with theviscosity being smaller than 20cs, 10 to 30 parts of sodium stearate, 30 to 80 parts of trimethylamine, 10 to 30 parts of dihexadecyl dimethyl aminomethyl sulfate, 5 to 8 parts of polyvinyl pyrrolidone, 20 to 60 parts of sodium silicate, 5 to 20 parts of PEG-120 distearate, 10 to 25 parts of ethylsilicate and 300 to 500 parts of water. Various ingredients such as the amino silicone oil are combined with stearic acid; the stearic acid dissolution through the heating to a temperature being 70 DEG C or more is not needed in the preparation process; the preparation is easier; the use effect of thesoftening agent is good; the surface of a fabric cannot be damaged.