Objective To assess atomoxetine and methylphenidate therapy for attention- deficit/ hyperactivity disorder (ADHD) .Methods We electronically searched the Cochrane Library (Issue 2, 2008), PubMed (1970 to 2008), MEDLINE (1971 to 2008), EMbase (1971 to 2008), Medscape (1990 to 2008), CBM (1978 to 2008), and NRR (1950 to 2008). We also hand-searched some published and unpublished references. Two independent reviewers extracted data. Quality was assessed by the Cochrane Reviewer’s Handbook 4.0. Meta-analysis was conducted by The Cochrane Collaboration’s RevMan 4.2.8 software. Results We finally identified 3 randomized controlled trials that were relevant to the study. Treatment response (reducing ADHD-RS Inattention subscale score) was significantly greater for patients in the methylphenidate group than in the atomoxetine group with WMD= – 1.79 and 95%CI – 2.22 to 1.35 (Plt;0.000 01). There was no statistical difference in other outcome measures between two groups (Pgt;0.05). Conclusions The effectiveness and tolerance of methylphenidate and atomoxetine are similar in treatment of ADHD. Further large randomized, double blind, placebocontrolled trials with end-point outcome measures in long-term safety and efficacy are needed.