In Online learning carried out today due to the Covid 19 Pandemic is an obstacle for students and teachers in practicum activities. Practicum activities that are usually carried out face-to-face in the laboratory become stopped and cannot be done. Therefore, a solution is needed to keep the practical activities of physics running. One of them is by using a physics practicum with crocodile physics. Raising the above issues, then our PKM-PM Team conducted community service activities in the form of Virtual Experiment Physics Training using Crocodile Physics which was carried out at Sma Negeri 3 Jakarta school. The implementation methods used are socialization, training and mentoring. The result of this training is to create a simulation of the physics practicum itself using Crocodile Physics. This activity gets a positive response based on knowledge needs. By using this virtual practicum has been able to provide knowledge benefits to the physics learning process. This training becomes a reference for trainees to carry out practicum activities virtually in online learning today.