Back contact solar cell, preparation method thereof and photovoltaic module

The invention provides a back contact solar cell, a preparation method thereof and a photovoltaic module, and relates to the field of photovoltaic technology. The preparation method comprises the steps of providing a substrate; sequentially preparing a first back passivation layer and a first conductive layer on the first side of the substrate; patterning the first back passivation layer and the first conductive layer to expose part of the surface of the first side of the substrate; preparing a second back passivation layer on the exposed partial surface of the first side and the residual first conductive layer; and preparing a front anti-reflection layer on the second side of the substrate. In the back contact solar cell, the first back passivation layer, the first conductive layer and the second back passivation layer are equivalent to increase of the thickness of the substrate, in the process of preparing the front anti-reflection layer, downward winding is difficult to generate, winding plating is reduced