The Deep Seismic Sounding(DSS)projects carried out from the 1970s of the last century in the lower Yangtze region and its neighboring area were reviewed. Then the basic wave group features of those wide angle reflection/refraction record sections，and that of the crustal structure are summarized. It shows that there were totally five clear wave groups on the record sections，which include the first arrival Pg，the reflection P1 from the bottom interface of the upper crust，the reflection P3 from the bottom interface of the middle crust，the strong reflection Pm from the Moho boundary，and the refraction Pn from uppermost mantle. Generally，these phases are easily consistently traced and compared，despite that some first arrivals are delayed or arrive earlier than normal due to the shallow sedimentary cover or bedrocks. Especially，in the Dabie Mountain region the seismic events of a few shots gathered always have weak reflection energy，coaxial twists，or disorganized waveform. This could be attributed to the variations of reflection depth，the disrupt of Moho，and the discontinuity of the reflection boundary within the crust. The regional crustal structure is composed by the upper，middle，and lower crusts，among which the middle and lower layers can be further divided into two weak reflection ones respectively because of the clear seismic evens on the record sections. The crustal thickness of the North China and Yangtze platform are 30～36km，and the Moho exhibits a flat geometry despite some local uplifts. For these two tectonic areas，the average compressional wave velocity in lower crust is 6.7±0.3km/s. Nevertheless beneath the Dabie Mountain area the crustal thickness is 32～41km，the Moho bends down sharply and takes an abrupt 4～7km offset in the vertical direction. The average compressional wave velocity in lower crust beneath the Dabie Mountain area is 6.8±0.2km/s.