A sensor controller for a particulate matter detection sensor includes a signal output circuit connected to the particulate matter detection sensor such that a sensor detection value is changeable in a predetermined output range by the signal output circuit, a heater configured to heat an attachment portion so as to burn and remove particulate matter attached to the attachment portion, a learning portion for calculating a sensor standard value in a state where the resistance between a pair of opposed electrodes is reduced based on an obtained sensor detection value and for storing the sensor standard value as a learning value, and a correcting portion for correcting the sensor detection value based on the sensor standard value stored by the learning portion.