The self-propelled autonomous spraying robot is a meticulously developed solution designed to address the challenges of fertilization and pesticide spraying for crops such as grapes, goji berries, citrus, apples, and other vine plants, as well as small shrubs and economic crops. This multifunctional sprayer not only features intelligent operation, allowing for efficient nighttime work, but also boasts strong terrain adaptability, enabling it to navigate various complex farmland environments with ease. Its ingenious design allows for easy replacement of operational loads, achieving precise atomization to reduce the use of fertilizers and pesticides, thereby enhancing the efficiency and quality of precision agriculture. As a type of robotic pesticide sprayer, its compact self-propelled design effectively lowers labor costs and minimizes environmental impact.