The present invention discloses a new bionic lateral-line sensor. The new bionic lateral-line sensor includes a cilia cupule, a cilia base rod, IPMC film sheets, extraction electrodes, and a sensor housing. When external current acts on a free end of the cilia cupule, mechanical deformation is generated on the cilia cupule, and the mechanical deformation is transmitted to the cilia base rod, so as to cause deformation on the cilia base rod; the deformation on the cilia base rod leads to mechanical deformation on the IPMC film sheets, and the IPMC film sheets generate induced voltages by using an IPMC mechano-electric effect; and a flow rate of the external current is calculated according to the acquired induced voltages. The new bionic lateral-line sensor provided in the present invention is used for measurement of external current. The cilia cupule and the cilia base rod are integrated, and the IPMC film sheet is used to replace a strain gauge, and is installed on the cilia base rod directly, so as to implement an integrated design and feature simple structure and convenient installation. In addition, an induced voltage can be output accurately by using the new bionic lateral-line sensor, to obtain a flow rate.