Objective To analyze the association between symptoms and herbs in the treatment of slow arrhythmia based on association rules with Chinese medicine. Methods Chinese Biological Medical Literature Database on disc

Chongqing VIP China Base

Journal Full-Text Database of China National Knowledge Infrastructure and Wan Fang Data were searched to collect the related literature on Chinese medicine treatment of slow arrhythmia published from January

1990 to December

2013. Related information

such as symptoms

herbs

etc. was extracted to build a clinical literature database of Chinese medicine treatment of slow arrhythmia. Python was taken as data preprocessing language. Apriori algorithm was taken as algorithm basis of association rule mining. Frequent item sets and association rules of related symptoms and herbs were analyzed. Results Totally 778 papers were included

with 360 herbs used. The herb with top frequency of frequent item set with one variable was Fuzi [Radix Aconiti Lateralis Preparata

附子]（ 514）. The herbs with top frequency of frequent item set with two variables were Danshen [Radix Salviae Miltiorrhizae

丹参] and Gancao [Radix liquiritiae

甘草]（ 440）. The herbs with top frequency of frequent item set with three variables were Huangqi [Astragalus mongholicus

黄芪]

Guizhi [cassia twig

桂枝]and Gancao（ 196）. The symptom with top frequency of frequent item set with one variable was palpitation（ 708）. The symptoms with top frequency of frequent item set with two variables were chest distress and palpitation（ 578）. The symptoms with top frequency of frequent item set with three variables were short breath

chest distress and palpitation（ 372）.Association rules showed that chest distress and palpitation were treated by Gancao

Fuzi

Guizhi

Danshen and Maidong [Radix Ophiopogonis

麦冬]. Short breath and chest distress were treated by Gancao

Fuzi and Guizhi.Fatigue and palpitation were treated by Gancao

Fuzi and Huangqi. Fatigue and chest distress were treated by Fuzi and Gancao. Short breath

chest distress and palpitation were treated by Gancao

Guizhi and Fuzi. Fatigue

chest distress and palpitation were treated by Gancao

Fuzi and Guizhi. Conclusion The treatment of slow arrhythmia is mainly warming Yang

invigorating and promoting blood circulation. The core symptoms of palpitation and chest distress are treated by core herbs of Fuzi

Guizhi

Huangqi

Danshen and Gancao.