Through deflagration-to-detonation transition(DDT) test,detonator sensitivity test and shock sensitivity test(gap gest),the sensitivity performances of three typical solid propellants,such as NEPE propellant,granule-cast CMDB propellant and screw-extruded CMDB propellant were studied. Results show that the NEPE propellant is sensitive to the detonator igniting,and three typical solid propellants are sensitive to the stimulation of the shock-wave,and there are deflagration-to-detonation transition in the small grain shape granule-cast CMDB propellant,and the interior of the sheet shape screw-extruded CMDB propellant and the NEPE propellant have the cavity. The experiments show that propellant's sensitivity performances have the close relationship with the propellant's composition (have or not have sensitive component),the charge shape (granule or pole) and the outside constraint condition (strong or weak confinement). Tests validate that solid propellant can also occur deflagration-to-detonation transition under some conditions.