The invention discloses an imporous heat-absorbing panel type solar air heat collector. Multiple V-shaped fins which are arranged on a heat absorbing plate as reinforcing heat transfer parts are structurally optimized; and an optimal opening width of each V-shaped part which forms the multiple V-shaped fins is given, namely w=C<0>+35x(H/H<0>-1)-12x(e/e<0>-1)+2x(P/P<0>-1)+9X(alpha/alpha<0>-1) (Formula I). According to the imporous heat-absorbing panel type solar air heat collector disclosed by the invention, the optimal opening width, which is based on different air passages, the height of thefins, the pitch of the fins and the angle of attack of the fins and can improve the comprehensive heat exchange capability of the imporous heat-absorbing panel type solar air heat collector, of each V-shaped part can be obtained, thus hot loss to environment is reduced, and the heat collection efficiency is improved.