To observed the effect and safety of Light therapy on the treatment of mild depression.Method : 41 depression patients in our hospital were enrolled from January 2010 to March 2011, and divided them into study (n=21) and control group (n=20) randomly.The study group was treated with 10000 Lux light therapy combined with Venlafaxine sustained-release capsules 150 mg/d, and the control group was treat with 100 Lux light therapy combined with Venlafaxine sustained-release capsules 150 mg/d.Each group was treated 30 minutes every day.Cured dura...