The application discloses a control method of a washing equipment and the washing equipment, and the washing equipment comprises a containing cavity for containing objects to be washed. The control method comprises the following steps: obtaining a projection area S of foam in the containing cavity during a washing process; and if the obtained area S is smaller than a preset area S0, then adding washing agent. In the application, the projection area S of the foam in the containing cavity is obtained, so that the amount of washing agent currently added into the containing cavity can be accurately determined. When the obtained area S is smaller than the preset area S0, it indicates that the amount of washing agent currently added is insufficient, and the washing agent with the amount cannot clean the objects to be washed. Therefore, the washing agent is added, so that the amount of washing agent is sufficient, and the objects to be washed can be cleaned. The washing equipment controlled by the control method of the application can reasonably add washing agent, has high cleaning efficiency on the objects to be washed, has good cleaning effect, and avoids waste of the washing agent.