Recently, there is a great attention and interest in robotics and artificial intelligence technology in various research field including agriculture and life science due to its high functionality and potentiality. In this talk, I will present several agricultural robotics projects progressing in my research group, Human-centered Robotics and Automation Laboratory. In details, the following four researches will be introduced in focus with swarm robotics, simultaneously localization and mapping, and deep learning technologies: 1) multiple agricultural unmanned aerial vehicles; 2) intelligent autonomous spraying vehicle; 3) autonomous unmanned aerial vehicle based small insect tracking and mapping system; and 4) autonomous cooperation of heterogeneous agricultural robots.