The invention discloses an adjustable wound irrigation device for trauma orthopaedics, including a mobile platform. A liquid storage tank is arrange on that upper side wall of the moving platform, theinner wall of the liquid storage tank is fixedly connected with two partition plates arranged horizontally. Between that liquid storage tank and the partition plate, a clear wat storage cavity, a physiological saline storage cavity and a pharmaceutical liquid storage cavity are sequentially formed from high to low. A mixing mechanism and a heating and heat preservation mechanism are arranged in the liquid storage tank, and liquid outlet pipes are communicated with the low end outer walls of the clear water storage cavity, the physiological saline storage cavity and the pharmaceutical liquid storage cavity. The invention has the advantages that the irrigation head aligns with the trauma wound placed on the placing plate, and irrigates it. If deep irrigation is needed, the irrigation head can be unscrewed and then irrigated by screw thread. During irrigation, the tap can be rotated, so that the water has pressurization period and decompression period, foreign bodies and contaminants canbe loosened and easily removed, and the debridement effect is better than that of continuous pressure stabilization irrigation.