The utility model provides an it holds transformer low -voltage winding structure and transformer to have to carry to transfer, this low voltage winding structure of includes that low pressure I section, low pressure II section, low pressure III section and five draw forth the copper bar, and the three -section all adopts the copper foil coiling, and the copper bar is drawn forth, low pressure IIIperiod number in inboard, low pressure I section and low pressure II section axial are located the outside side by side, low pressure III section adopts x copper bar and x2 copper bar to draw forth,and low pressure I section adopts a1 copper bar and x1 copper bar to draw forth, and low pressure II section adopts a2 copper bar and x2 copper bar to draw forth, and copper bar x2 arranges with low pressure II for low pressure III section altogether. The coiling low pressure III of this winding construction elder generation section, draw forth in copper bar x, x2 left side, the II of coiling lowpressure again section, the coiling of the low pressure II section number of turns finish and fasten earlier temporarily, the I of coiling low pressure again section is drawn forth on the left of copper bar a1, the x1 after that, draw forth copper bar a2 at last. This structure adopts the copper foil coiling, has characteristics such as the manufacturability is good, the coiling is efficient, product mechanical strength high, the lead wire assembly is simple and convenient clean and tidy, has improved the short circuit ability that endures of transformer.