Ru NQR study in single crystals of Sr2RuO4 (T-c similar to 0.7K) has b
een carried out to investigate a superconducting pairing state. In the
superconducting state, 1/T-1 exhibits a sharp decrease with no cohere
nce peak just below T-c and the T1T=constant behavior well below T-c,
suggesting that tile anisotropic pairing state is realized as in high-
T-c and heavy-fermion superconductors.