A softening agent for a non-woven fabric comprises the following raw materials in parts by weight: 8-10 parts of sodium benzoate, 11-16 parts of octamethyl cyclotetrasiloxane, 7-9 parts of sodium stearate, 3-5 parts of hydroxy propyl methylcellulose, 8-12 parts of polyvinyl alcohol, 2-4 parts of sodium carbonate, 1-2 parts of sodium oleate, 3-5 parts of sodium tripolyphosphate, 5-9 parts of laurylsodium sulfate, 6-8 parts of dimethyl disiloxane, 1-3 parts of a coupling agent, 0.5-1.2 parts of sodium hydroxide, 10-14 parts of polyethoxylated fatty alcohols, 11-14 parts of ascorbic acid, 10-12parts of citric acid and 40-50 parts of deionized water. The softening agent has the following beneficial effects: (1) the softening agent is a non-ionic softening agent with a good softening effect,causes less environmental pollution, is harmless to a human body and is more environmentally friendly; and (2) the non-woven fabric using the softening agent can maintain favorable elasticity and wearresistance.