This application relates to the technical field of handheld washing machines, and provides a washing method of a handheld washing machine and a handheld washing machine. The washing method of a handheld washing machine includes a main washing step: spraying a detergent to laundry through the handheld washing machine, then outputting a mechanical force to the laundry through the handheld washing machine to continuously wash the laundry, and during the continuous washing, intermittently blowing a high-pressure airflow to the laundry by the handheld washing machine. The handheld washing machine may perform the washing method of a handheld washing machine. The washing method of a handheld washing machine and the handheld washing machine provided in this application have advantages of convenient use, a good laundry washing effect, and high washing efficiency.