The influence of DC-biased current (IDC) on longitudinal giant magnetoimpedance (GMI) effect in Co-based amorphous ribbon with a meander structure from room temperature to 120 ℃ has been investigated. The results show that IDC increases the temperature stability of the impedance of amorphous ribbon at 20 MHz. By deriving the expression of the transverse permeability according to a magnetization rotation model, we attributed the improved temperature stability to the combined effect of temperature and bias field HDC generated by IDC on the transverse permeability. It is also showed that IDC not only effectively inhibits the weakening of the GMI ratio at high temperature, but also significantly improves the GMI sensitivity. This will help to achieve sensitive low magnetic field measurement under large temperature fluctuation.