In this course, a systematic introduction to particle physics will be provided, with the topics mainly covering: the tool of Feynman diagrams, the Standard Model in particle physics (the zoo of fundamental particles, electroweak unified theory, and Higgs mechanism), particle physics at colliders (particularly at the Large Hadron Collider), and the interplay between particle physics and cosmology. It aims at enabling students to catch up the progress in particle physics in a timely way, and appreciate the beauty of fundamental rules in nature.