Those have special medicinal ingredients for their natural and topographical features.

The Ryongchon mineral spring wells out in various places. The total amount of mineral matters of Ryongchon mineral spring No. 2 is 2.6 grams per liter, that of metasilicic acid 103.76 milligrams per liter and its temperature is 10 degrees C.

The mineral spring strong acidity is good for the treatment of chronic gastritis, stomach and duodenal ulcer, chronic enteritis and colitis, chronic diseases of articulation, etc.

The Sinhung mineral spring with carbonic acid and iron in Kujang County gushes out in two places. The total amount of mineral matters of spring No. 2 is 0.7 gram, that of free carbonic acid 1 gram and that of metasilicic acid 47.73 milligrams per liter.

The weak-acid mineral spring is efficacious for chronic gastritis, stomach and duodenal ulcer, nephrolithiasis, hypertension, hypotension and other diseases.

Having sodium hydrogen carbonate, calcium, iron and others, the Sinphung mineral spring in Kusong City is efficacious for the cure of chronic enteritis and colitis, chronic hepatitis and arteriosclerosis.

Unsan Spa, simple silica-radon spring, comes naturally out of the ground in various spots of two places, whose amount of ingredients is all much the same and temperature is 44-56 degrees C.

The alkaline spa proves fruitful in curing chronic gastritis (hyperacid), chronic inflammatory diseases, infertility, neuralgia, external wound and operation sequela, chronic osteoarthritis diseases, eczema, skin itch and others.

Besides, there are hot springs in Uje, Sokchang, Sakju and other places.

Sanatoriums are located in and around the mineral spring and hot spring resorts.

The Okhodong Social Insurance Rest Home was built near the Okhodong mineral spring resort in Yaksu-ri, Sonchon County, in May Juche 36 (1947). The water is potent for the stimulation of secretion in stomach, diuresis and the promotion of the metabolism.

Later the rest home developed into sanatorium with modern medical facilities and able health workers.