Stress corrosion crack (SCC) susceptibility of titanium alloy TA7 in methanol and hydrochloric acid-methanol solutions was studied by slow strain rate tensile test (SSRT), SEM and optical photography. It demonstrates that TA7 has SCC susceptibility in methanol solution. SCC susceptibility of TA7 in hydrochloric acid- methanol solution drastically increased with the increasing concentration of hydrochloric acid. It shows that the SCC susceptibility occurs in methanol solution. SCC of TA7 originates from the bottom of the corrosion pit in hydrochloric acid-methanol solution.