The invention discloses an immersion apparatus with liquid temperature detection function and a temperature measurement method. The apparatus comprises a microprocessor, a temperature sensor, a power supply, a vibration switch, a timer, a power supply control module and an LED indicating lamp. The method includes the steps of waking up the immersion apparatus to enter into a working state when the vibration switch detects a vibration state, the microprocessor acquiring the temperature data of the temperature sensor and driving the LED indicating lamp to display corresponding color and / or flashing according to corresponding frequency, starting the timer for timing, and stopping the microprocessor and the LED indicating lamp when timing is over. A digital temperature detection apparatus is used for detecting liquid temperature, the water temperature is displayed through flashing colors, and the temperature measurement process is simple, rapid, accurate and objective. The vibration switch and the timer are combined to save power and energy. When a cup shakes or water is played, the current water temperature can be displayed immediately. The apparatus and method are applicable to various liquid temperature detection devices.