Disclosed are a humic acid skin gel and a preparation method thereof. A thickening polymer is suspended in water to form a gel base suitable for application on skin. The gel base is used to provide viscosity for being combined with humic salt powder obtained through pyrolysis and extraction of humic acid contained in organic substances, so as to produce the humic acid skin gel provided by the present invention, which contains very beneficial nutritive ingredients, such as vitamins, minerals, and amino acids, and has effects of helping cell to activate and expelling toxins accumulated on the skin, making it applicable to beautification and treatment of skin and ensuring great commercial potential in various respects.一種腐植酸皮膚凝膠及其製備方法,乃藉由將具增稠性之高分子化合物懸浮於水中,使成為適合用於皮膚上的凝膠基底,並藉此凝膠基底來提供黏稠度,以結合通過有機質中裂解萃取腐植酸所獲得的腐植酸鹽粉末,而製成本發明所提供之腐植酸皮膚凝膠,它非常有益的維生素、礦物質和氨基酸等營養成份,以及可以幫助細胞活化,排除累積於皮膚之毒素的效果,不但可應用於皮膚的美容與治療上,更可望在許多方面發展出極大的商業潛力。