The utility model discloses a mixer excessive pressure reminding device, include motor, speed reducer, hydraulic pressure monitoring alarm, feeding control valve, hydraulic pressure sensor, jar body, atmospheric pressure monitoring alarm, baroceptor, exhaust control valve, air pump, gas holder, gas -supply pipe, central pivot, impeller, air inlet, move iron core, sensor coil, shell fragment, vacuum diaphragm chamber, elastomer, lead power ring sum hydraulic pressure changer. The utility model discloses excessive pressure reminding device has the baroceptor can detect out the pressure variation of the internal portion of jar at agitator tank body internally mounted to can finally turn into audio -visual digital form and show at hydraulic pressure monitoring alarm, when hydraulic pressure was too high, the alarm was accessible time reported to the police and is reminded the staff, still disposes exhaust control valve and air pump, can open exhaust control valve when hypertonia, and internal pressure adjusts to the jar body, install hydraulic pressure sensor, can use with the baroceptor cooperation.