A fire in a electrical ready board is a serious safety incident that requires immediate emergency measures to avoid further harm. First, cut off the power supply by quickly turning off the main circuit breaker or unplugging the power plug to prevent the spread of the fire and the risk of electric shock. Secondly, use a fire extinguisher or fire extinguishing equipment to put out the fire immediately, try to control the fire and avoid the spread of the fire. At the same time, call the police promptly and call the fire brigade to come to the rescue. During emergency treatment, ensure your own safety and avoid direct contact with flames and thick smoke. If possible, wear a wet towel or mask to prevent inhalation of harmful gases. Finally, after the fire is under control, promptly check whether the wires and equipment around the electrical ready board are damaged to ensure the safety of power supply again.