This article through the description cooking oil quality backward system setup procedure, proposed that in food tracing referral system's data acquisition and the polling message system establishment's essential factor, the implementation and the application, the system including the tracing database, the information acquisition, the network transmission and many kinds of inquiry terminals, introduced in detail the handset or the PDA WAP inquiry, the short note inquire and touch the terminal with to apply in cooking oil tracing referral system's realization.