The invention relates to a soft
capsule for preventing and treating Alzheimer's
disease and a preparation method of the soft
capsule. The soft
capsule is prepared from the following raw materials in parts by weight: 60 to 80 parts of
acer truncatum bunge seed oil, 10 to 25 parts of
phospholipid, 6 to 8 parts of seville orange flower, 4 to 7 parts of
lycium ruthenicum, and pharmaceutical excipients for the soft capsule. According to the capsule, a large amount of
acetylcholine can be generated in a body, the content of the
acetylcholine in a brain of an Alzheimer's
disease patient is increased, and information conduction is enhanced, so as to activate brain cells and improve memory and intelligence level. The capsule contains natural
nervonic acid; the
nervonic acid is a unique
chemical substance which is recognized in the present world and can be used for repairing damaged nerve fibers, and can promote repair and regeneration of the damaged nerve fibers, thereby improving the memory and the intelligence level. Meanwhile, the soft capsule also has the effects of improving the activity of NK cells and enhancing
cellular immunity and
humoral immunity, thereby improving human immune functions. The seville orange flower has the
efficacy of activating Qi and easing middle jiao, and regulating Qi and soothing the liver, thereby relieving
depressive symptoms of the Alzheimer's
disease patient.