The present invention provides an ionic compound containing a cyanoborate; a process for production thereof; and an electrolytic solution and a device, each utilizing the ionic compound. The electrolytic solution of the present invention comprises an ionic compound represented by general formula (1) and a solvent. Further, a production process of the present invention comprises reacting a compound represented by general formula (8) with a substitution reaction reagent to obtain a compound represented by general formula (1). Mn+([B(CN)4-mYm]−)n  (1) Mn+([B(CN)4-m(XR13)m]−)n  (8) (wherein, Mn+ represents an organic or inorganic cation having a valency of 1 to 3; Y represents a halogen, a hydrocarbon group which has a main chain having 1 to 10 carbon atoms and which may optionally contain a halogen, —C(O)R14, —S(O)lR14, —Z(R14)2, or —XR14; R14 represents H, a halogen, or an organic substituent group which has a main chain having 1 to 10 atoms; Z represents N or P; X represents O or S; R13 represents H, or an hydrocarbon group which has a main chain having 1 to 10 atoms; l represents an integer of 1 to 2; m and n represent an integer of 1 to 3 respectively)