The invention provides a weight reduction health product -- a slimming essential oil which is prepared by using natural herbs as raw materials through a special and refined process of unique techniques. The prescription is that (by weight portion): 50 potions of artem-isia vulgaris leaves, 35 portions of matricaria indica, 0.5-1 portion of glossy ganoderma, 2-2.5 portions of saffron, 2-3 portions of lily, 0.3-1.2 portions of fructus forsythiae, 0.5-1 portion of aweto, 3.5-4 portions of gardenia, 0.3-0.5 portion of rhizoma alismatis, 16-18 portions of holly, 8-10 portions of grape pip and 2-2.2 portions of epicarpium benincasae. The medicinal materials are mixed according to the mixture ratio, washed, sun-dried, ground, screened with a 200-mesh sieve and put into a vessel, added with right amount of olive oil, stayed for 3-5 days, and then lixivium is squeezed out and the dregs are discarded, the lixivium is filtered and bottled to get the finished product.