By underwater explosion and brisance experiments, the effects of titanium powder with different content on the detonation properties of emulsion explosive were tested and compared with aluminized emulsion explosive. The kinetic parameters of thermal decomposition were calculated using thermal analysis data measured by the C80 calorimeter. Results show that compared with emulsion explosive without additive, the explosion impulse, shock wave energy and bubble energy of emulsion explosives with 5% titanium powder are increased 14.95%, 21.74% and 19.90%. With increasing titanium powder, shock wave parameters increase first and then decrease, it reaches maximum when the mass fraction of titanium powder is 10%, and its brisance is increased 17.65%, which means that titanium powder have remarkable impact on the detonation capability of emulsion explosive. The influence of titanium powder on thermal stability of emulsion explosive is least than aluminum powder and boron powder, whose apparent activation energy is 193.48 kJ·mol^-1.