There are two objectives of this research (1) to find out whether there is a significant difference of students’  performance after applying Three – Step Interview technique in 3 different topics; (2) to find out the effect of students’ speaking achievement in every aspect of speaking. The method was time series design. The result shows that : (1)Three – Step Interview is applicable to improve the students speaking ability. Students’ mean score in post-test 1 is 45.40 ,post test 2 increase to 61.60; its gain is 16.2 and in post test 3  increase up to 81.20 its gain is 19.6 ; ( 2 ) Three – Step Interview technique gives good effect for the students’ speaking achievement in every aspect of speaking. Based on the result above, it can be said that Three – Step Interview can be applied in teaching speaking in order to improve students speaking ability.  Key words: speaking, three – Step interview technique, time series design
                        
                        
                        
                        
                            
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