The invention discloses a truck lawn type splash-proof rear mudguard, which belongs to the technical field of mudguards. The truck lawn type splash-proof rear mudguard comprises a mudguard body, clamping blocks are arranged on the two sides of the mudguard body, clamping rods are connected inside the two clamping blocks in a clamping manner, the two clamping rods are fixedly connected with the twoclamping blocks through fixing pins, connecting plates are fixedly connected to one sides of the two clamping rods, and two connecting blocks are arranged on the front surface wall of the mudguard body. According to the truck lawn type splash-proof rear mudguard, a sliding block, a scraper knife and a sliding groove are arranged, the sliding groove facilitates sliding of the sliding block, the scraper knife can be driven to slide when the sliding block slides, the mud block on the mudguard can be scraped while the scraper knife slides, cleaning is convenient and rapid, the clamping blocks play a role of clamping a connecting plate on one sides of the clamping rods, the fixing pins can fix the clamping rods and the clamping blocks conveniently, the clamping rods are prevented from fallingfrom the clamping blocks, and the connecting plate can increase the mud guarding range of the mudguard conveniently, and therefore the mudguard has a better mud guarding effect.