On the 13 March 2022, Ms. Ngamta Rodsonjai, Assistant Director of Network Integration, the National Institute for Child and Family Development, Mahidol University gave the opening ceremony speech about the 2nd Academic Conference of the Year 2022 on the topic “Bullying in Early Childhood”.  We set up this conference because we need teachers, parents, and people who work with children to have the knowledge and can apply this knowledge to prevent bullying in early childhood and how to create the activities to reduce bullying. The participants were teachers and people who work with children around 3,400 people joined this event.