1. A novel portable mosquito dispeller, comprising a shell (11), wherein a battery case (10) is fixedly mounted in the shell (11), a battery (9) is received in the battery case (10), a lower portion of the battery case (10) is flat, a base (14) is screwed at a bottom of the shell (11) such that receiving cavities (16) for receiving mosquito-repellent mats are defined by the battery case (10), the shell (11) and the base (14), first studs (101) and second studs (102) which are integrally formed upwards are disposed on an upper portion of the battery case (10), a circuit board (5) is fixedly connected to the first studs (101) with screws and is provided with atmosphere lights (6), an indicator light (7) and a switch button (8), a top cover (1) is fixed to the second studs (102) with screws to mount a PTC heating element/heating film bracket (4) between the circuit board (5) and the top cover (1), and a PTC heating element/heating film (2) electrically connected to the circuit board (5) is disposed in the PTC heating element/heating film bracket (4).