The invention discloses a two-way photovoltaic shed with a crisscross drainage system, comprising two Y-shaped brackets, a draining channel, a plurality of channel purlins, W-shaped gutter channels, cross gutter channels and a photovoltaic component, wherein the draining channel is erected on the two Y-shaped brackets which comprise struts and cross arms, the channel purlins are installed in parallel at equal intervals on the cross arms, the W-shaped gutter channels are installed in parallel at equal intervals on the channel purlins and intersect the channel purlins, the cross gutter channels are installed at equal intervals between every two W-shaped gutter channels, the photovoltaic component is laid on the cross gutter channels, and two ends of the photovoltaic component are fixed to the W-shaped gutter channels through blank pressing combined with rubber cushion blocks. The two-way photovoltaic shed with the crisscross drainage system provided by the invention adopts a simple structure to realize fixation of the photovoltaic component of the shed, and simultaneously adopts the crisscross drainage system, so that water on the photovoltaic component can smoothly flow onto the ground, thereby protecting the photovoltaic component and prolonging service life.