A novel infrared-sensitive streak image tube with a combined infrared photocathode and electrostatics focused electronic optical system is described. Using the characteristics of electron trapping material(ETM) for the rapid infrared up-conversion, a kind of combined infrared photocathode is made by coupling ETM-based infrared up-conversion screen with visible photocathode. The novel infrared-sensitive streak image tube is able to extend spectral sensitivity to 800～1600 nm.The peak value of the converting efficiency is located at 1165 nm. Time resolution is superior to 15 ps.