All eligible subjects will be asked to fill out the Patient Health Questionnaire Depression Self-test (PHQ-9) and who score 10-19 on the PHQ-9 will be entered for a Structured Clinical Interview for Hamilton Rating Scale for Depression (HAMD). This interview will be conducted in person by our psychiatrist Dr. Chan Wai-Chi from Department of Psychiatry, the University of Hong Kong in Queen Mary Hospital. They will be divided into 2 groups by randomization. (Group A n=18, Group B n=18) The participants will receive 2 acupuncture session per week for 3 consecutively weeks. In each treatment session, all subjects in both groups will receive the same amount of needle insertion ( total 14 needles) , all needles will be retained for 30 minutes. The whole treatment will last for around 45 minutes. No sedation will be conducted.