For even \(k\ge 6\) and square free \(D>1\) with \(D\equiv 1\pmod 4\) , let \(\chi _D\) be the primitive quadratic Dirichlet character mod D and \(S_k(D,\chi _D)\) be the space of cusp forms of weight k, level D, and nebentypus \(\chi _D\) . We show that if \(D>2^{k-2}\) , then the critical values of symmetric square L-functions on \(S_k(D,\chi _D)\) are linearly independent.