We consider general solution and the generalized Hyers-Ulam stability of an Euler-Lagrange quadratic functional equation f(rx + sy) + rsf(x - y) = (r + s)[rf(x) + sf(y)] in fuzzy Banach spaces, where r, s are nonzero rational numbers with r(2) + rs + s(2) - 1 not equal 0, r + s not equal 0.