The utility model provides a method of dry -type on -load tap -changer circuit and accent hold and the pressure regulating, including setting up the high -voltage switch circuit and the low -voltage switch circuit of setting in every looks low voltage winding in the every looks high voltage winding of three -phase transformer, the high -voltage switch circuit includes five bi -directional selection switches, work high voltage circuit breaker VK1, switches high voltage circuit breaker VK2, transfers appearance transition resistance R1 and pressure regulating transition resistance R2, low -voltage switch circuit, including a low -voltage circuit breaker VK11 and the low pressure transition resistance R of series connection between first winding head end and secondary winding head end, the two low -voltage circuit breaker winding VK12 of series connection between first winding head end and secondary winding head end, three low -voltage circuit breaker VK13 of series connection between first winding tail end and secondary winding head end establishes ties at the fourth low -voltage circuit breaker VK14 of first winding tail end with the secondary winding tail end. This circuit reliableand simple has characteristics such as insulating reliable, small, simple structure, switching process do not cut off the power supply.