The invention discloses gel for treating a traumatic injury and a preparation method of the gel. The gel comprises the following medicinal materials: grass cultivated ganoderma lucidum, helicia cochinchinensis, scarlet kadsura root, nude fern herb, manyprickle acanthopanax root, herb of herba cirsii, ailantus endocuticle, ipomoea cairica, spiderflower seed, Chinese elder, root of procumbent Indian mallow, Chinese leek seed, paraquilegia, olibanum, artemisia anomala, salviae miltiorrhizae, rhizoma sparganic, resina draconis, radix curcuma, ground beeltle, sinochasea trigyna, macrocarpa nucuma, mongolian snake gourd root, sappanwood, native copper, drynaria total flavonoids, acacia catechu, semen cuscutae, eucommia ulmoides, dipsacus asperoides, immature bitter orange, semen coicis, fried rhizoma atractylodis macrocephalae and radix liquiritiae. The gel has the beneficial effects that the medicine disclosed by the invention has the efficacies of promoting blood circulation to remove blood stasis, soothing the liver, promoting the circulation of qi, relieving swelling and pain, enriching blood, promoting blood flow, curing the wound, relaxing tension, relieving pain, and enhancing the resistivity of a patient, is simple in formula, precise and appropriate in medicine selection, simple in preparation process, small in toxic or side effect, and convenient to mediate; and the gel is easy to manufacture and low in cost.