The spin-polarized photocurrent is used to study the in-plane electric field dependent spin transport in undoped InGaAs/AlGaAs multiple quantum wells.In the temperature range of 77-297K,the spin-polarized photocurrent shows an anisotropic spin transport under different oriented in-plane electric fields.We ascribe this characteristic to two dominant mechanisms:the hot phonon effect and the Rashba spin-orbit effect which is influenced by the in-plane electric fields with different orientations.The formulas are proposed to fit our experiments,suggesting a guide of potential applications and devices.