First check whether the data cable or charging head is broken. If not, then you can only be sure of one thing, that is, the charging port of the anti-mite meter is damaged.
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Under normal circumstances, it is necessary to take the maintenance of the mite removal instrument using steps: 1, connect the power adapter end with the mite removal instrument, turn on the power, the blue work indicator light (only a light on the left inside), put it to the ear to listen to a slight sound, indicating that the mite removal instrument begins to work. 2. Please place the anti-mite meter in a place where the air is clear and there is no obstacle