miR‐195 is involved in cardiac hypertrophy‐induced arrhythmias by inhibiting Cavβ1, Kir2.1 and Kv4.3 proteins, which were supported by the following data: (1) the expression of miR‐195 was significantly increased in the myocardium of HF mice. The gene discussed is KCND3; the disease is cardiac hypertrophy.