Disclosed are an excrement alarming apparatus and an excrement alarming method, the excrement alarming apparatus includes: a temperature sensor provided on one side of the excrement alarming apparatus and configured to measure temperature; a humidity sensor provided on one side of the excrement alarming apparatus and configured to measure humidity; a controller configured to detect excrement using temperature information measured by the temperature sensor, first humidity information measured by the humidity sensor, and second humidity information received from an external device; and a communication unit configured to transmit an excrement detection signal indicative of the detection of the excrement.