Environmental pollution crisis, particularly mercury ions (Hg²⁺) contamination, seriously threatens health of all living organisms. Several researchers have explored that even extremely low concentration of Hg²⁺ can rigorously damage the living organisms. Therefore, it is very much needed for real-time detection of Hg²⁺. To tackle mercury contamination and for its detection We herewith tried an intelligent design of a new fluorescent “turn-on” probe which was prepared based on the mercury promoted hydrolysis of vinyl ether moiety. The probe rapidly reacted with mercury ions and showed good selectivity over other metal ions.