MAIN OUTCOME MEASURE: Motor score subscale of Unified Parkinson's Disease Rating Scale (UPDRS) was used to measure the motor performances. Balance ability in each patient was assessed as follows: subjects were placed on a force platform (SPS, SYNAPSYS posturography system) to assess the displacement area from the centre of gravity, either with eyes open or closed, in a standing posture. The mini balance evaluation systems test (the mini-BESTest) was used to measure the performance of balance and walking speed. The test was repeated twice each in baseline period, SA period and post-SA period. The Mann-Whitney U test, Chi-square test, and Fisher's exact test were used to compare the baseline characteristics of the 2 groups. One-way repeated measures ANOVA was used to examine the differences among different time points (before, during, and after acupuncture treatment) within a group. Association between continuous variables was evaluated with Spearman`s rank correlation coefficient.