This contribution proposes a simplification method of triangle prediction merge list construction in VTM-4.0[1]. The proposed method reusing inter merge list as triangle prediction’s merge list. It is reported that as compared to VTM-4.0, 0.07% B-D rate increase is achieved in random access configuration. And 0.04% B-D rate increase is achieved in low delay B configuration when using the whole merge list. When using only the spatial and temporal merge list, 0.03% coding gain and 0.05 coding loss is achieved in random access and low delay B configuration respectively.