A bis(aminostyryl)naphthalene compound represented by the general formula [I] or the like below. ##STR00001## (where R.sup.2 and R.sup.3 each denotes an unsubstituted aryl group; R.sup.1 and R.sup.4 each denotes an aryl group having a specific substituent such as methoxy group; and R.sup.5 and R.sup.6 each denotes a cyano group or the like.)A process for producing a bis(aminostyryl)naphthalene compound represented by the general formula [I] by condensation of, for example, 4-(N,N-diarylamino)benzaldehyde with diphosphonic ester or diphosphonium.The bis(aminostyryl)naphthalene compound emits intense yellow or red light. The process permits efficient production of the bis(aminostyryl)naphthalene compound.

 
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