According to the second kind of elliptic equation, many new infinite sequence solutions of nonlinear LC circuit equation were constructed with the help of symbolic computation system Mathematica, which include new infinite sequence smooth solutions composed of Riemann theta function, Jacobi elliptic function, hyperbolic function and triangular function, new infinite sequence peak soliton solutions composed of exponential function and triangular function, new compact solutions composed of Jacobi elliptic function and triangular function.