Multiple Small-angle-cone-specimen Test (MST) was proposed for the investigation of corrosion fatigue crack growth. Corrosion fatigue of H68 brass in Mattsson solution was examined to illustrate the experimental procedure as well as results of the new method. Comparing with CT, CCT, WOL specimens and replica method, the new method showed several advantages: (1) Growth behavior of multitude surface cracks on different transverse sections can be examined simultaneously; (2) Both electrochemical environment and mechanical condition can be maintained during the test without disturbance; (3) It is convenient to study the relationship between crack growth path and micro-structure; (4) The experimental equipment required is easy to get. Both time and expenses can be saved for measurements.