Table 1. Characteristics of the included studies.

Studys	Disease	Sample Size		Mean Age±SD		Sex (Male/Female)		Experimental Group		Control Group	Treatment duration	Outcome
		E	C	E	C	E	C	Acupoints	Method of acupuncture
Yang2011	Functional dyspepsia	30	30	37.6± 9.8	38.4 ±10.1	13/17	15/15	Zusanli, Neiguan	EA	Domperidone	2W	SAS, SDS
Li2011	Irritable bowel syndrome	35	35	39.1±11.80	37.93±11.45	15/20	18/17	Tianshu, Zusanli, Shangjuxu, Sanyinjiao, Taichong, Baihui, Yintang	EA	Pinaverium bromide	4W	SAS, SDS
Chen2012	Irritable bowel syndrome	30	34	40.5±8.75	41.9±10.01	11/19	14/20	Baihui, Shenting, Neiguan, Shenmen, Zhongwan, Tianshu, Qihai, Sanyinjiao, Taichong	EA	Bacillus licheniformis + Flupentixol and Melitracen Tablets	4W	HAMA, HAMD
Peng2013	Irritable bowel syndrome	20	20	47.5±3.2	45.8±4.0	8/12	10/10	Zusanli, Tianshu	EA	Macrogol 4000 Powders + Combined Bacillus Subtilis and Enterococcus Faecium Granules with Multivitamines Live	4W	SAS, SDS
Zhong2013	Functional constipation	170	62	43.85±17.79	41.97±18.07	33/139	13/49	1: Tianshu, Dachangshu	EA	Mosapride	4W	SAS, SDS
								2: Quchi, Shangjuxu
								3: Tianshu, Dachangshu, Quchi, Shangjuxu
Wu2013	Functional constipation	23	18	27.91±8.91	28.39±9.68	8/15	6/12	Quchi, Shangjuxu	EA	Mosapride	4W	SAS, SDS
Xiong2014	Functional constipation	67	41	NR	NR	NR	NR	Quchi, Shangjuxu	EA	Mosapride	4W	SAS, SDS
Zheng2014	Irritable bowel syndrome	261	87	41.25±16.99	42.29±18.3	138/118	52/34	1: Tianshu, Dachangshu	EA	Loperamide Hydrochloride	4W	SAS, SDS
								2: Quchi, Shangjuxu
								3: Tianshu, Dachangshu, Quchi, Shangjuxu
Tian2014	Functional diarrhoea	37	16	39.77±15.44	39.27±16.88	NR	NR	Tianshu, Dachangshu	EA	Loperamide Hydrochloride	4W	SAS, SDS
Da2014	Functional constipation	18	16	51.22±22.84	38.38±19.61	4/14	2/14	Tianshu, Fujie, Shangjuxu	EA	SA	8W	SAS, SDS
Jin2015	Functional dyspepsia	28	28	49.29±10.32	48.25±11.40	11/17	10/18	Zusanli, Taixi, Zulinqi, Neiguan, Shenmen	MA	SA	4W	SAS, SDS
Yuan2015	Functional dyspepsia	31	32	44.21±21.12	39.21±25.12	13/18	15/17	Gongsun, Neiguan	MA	Domperidone	4W	HAMA, HAMD
Lian2016	Functional diarrhoea	32	30	33.85±12.55	31.60±11.56	14/18	11/19	Tianshu, Dachangshu, Quchi, Shangjuxu	EA	Loperamide Hydrochloride	4W	SAS
Du2016	Functional dyspepsia	48	47	44.89±10.12	43.28±12.05	13/35	15/32	Shenque, Sishencong, Shenmen, Baihui, Zusanli, Zhongwan, Neiguan	EA	Domperidone	4W	HAMD
Ding2016	Functional diarrhoea	48	19	43.19±17.08	41.37±16.74	28/17	8/11	Tianshu, Dachangshu	1: EA with strong stimulation	Loperamide Hydrochloride	4W	SAS, SDS
									2: EA with little stimulation
Li2017	Irritable bowel syndrome	79	39	46.3±13.2	48.9±12.4	42/34	17/16	Baihui, Yintang, Tianshu, Zusanli, Shangjuxu, Sanyinjiao, Taichong	MA	Pinaverium bromide	6W	SAS, SDS
Nie2017	Functional diarrhoea	53	53	46.4±10.8	46.1±10.6	29/24	32/21	Tianshu, Shangjuxu	MA	Loperamide Hydrochloride	4W	SAS, SDS
Shen2018	Functional dyspepsia	32	32	45.71±11.26	44.21±11.59	7/27	6/28	Baihui, Yintang, Neiguan, Zhongwan, Tianshu, Qihai, Zusanli, Sanyinjiao, Taichong	EA	Mosapride	4W	HAMA, HAMD
Zhong2018	Irritable bowel syndrome	60	30	31.12±12.74	30.22±13.99	35/25	21/9	1: Quchi, Shangjuxu	EA	Loperamide Hydrochloride	4W	SAS, SDS
								2: Quchi, Shangjuxu, Tianshu, Dachangshu
Mak2019	Irritable bowel syndrome	40	40	50.85±11.57	50.83±14.15	20/20	18/22	Neiguan, Shenmen, Zusanli, Shangjuxu, Sanyinjiao, Taichong, Baihui, Yintang	EA	SA	10W	PHQ-9, GAD-7
Meng2019	Irritable bowel syndrome	35	35	39.3±11.5	38.4±13.5	16/19	13/22	Taichong, Zusanli, Shangjuxu, Sanyinjiao, Tianshu, Baihui, Yintang	MA	Pinaverium bromide	4W	SDS
Chen2019	Functional dyspepsia	35	35	40.97±11.70	43.59±12.4	11/22	14/20	Zhongwan, Tianshu, Zusanli, Neiguan, Baihui, Taichong	MA	SA	4W	SAS, SDS
Xu2020	Functional dyspepsia	31	33	35.3±19.1	35.4±15.3	6/25	6/27	Quchi, Shangjuxu	EA	1: Mosapride	4W	SAS, SDS
										2:SA+Mosapride
Yang2020	Irritable bowel syndrome	20	20	55.0±5.4	54±6.1	12/8	10/10	Neiguan, Tianshu, Sanyinjiao, Zusanli, Shangjuxu, Taichong, Yintang	MA	Montmorillonite powder + Flupentixol and Melitracen Tablets	2W	HAMA, HAMD

E: Experimental Group; C: Control Group; MA: Manual acupuncture; EA: Electroacupuncture; SA: Sham acupuncture; NR: Not report; SAS: Self-Rating Anxiety Scale; SDS: Self-Rating depression Scale; HAMA: Hamilton Rating Scale for Anxiety; HAMD: Hamilton Rating Scale for Depression; PHQ-9: Patient Health Questionnaire-9 items; GAD-7: Generalized Anxiety Disorder-7 item