Belonging to the technical field of health food, the invention discloses a cordyceps militaris dunaliella salina tablet candy, a preparation method and a use method thereof. The cordyceps militaris dunaliella salina tablet candy is prepared from 20% of cordyceps militaris, 16% of maltodextrin, 20% of dunaliella salina powder, 14% of fructo-oligosaccharide and 30% a food additive. The cordyceps militaris dunaliella salina tablet candy provided by the invention has the multiple efficacy of adjusting human body's immune function, resisting inflammation, cancer, viruses and fatigue, mediating ''three high'' diseases, repairing cells, delaying aging, dispelling wind and eliminating dampness, maintaining beauty and keeping young, and is a health care functional food suitable for the middle-aged and elderly at all seasons. Years of clinical practices prove that the cordyceps militaris dunaliella salina tablet candy has good conditioning and treatment effects on insomnia, constipation, gout, ''three high'' diseases, rheumatic arthritis, allergic rhinitis, chronic gastritis, recurrent oral ulcer, dry eye syndrome, hepatorenal syndrome and other diseases, and relieves the pain of many patients. The candy has the advantages of good taste, rich nutrition, strong efficacy, and convenient carry and transportation.