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Theevaluation of signal structure is an importantphaseof the signal structuredesignin the process of GPS modernization,Galileo and BDS construction.The new generation navigationsignals of global navigation satellite system (GNSS) have thecharacteristics ofdiversificationof signal structure,large bandwidthand complicated receiving method.Based on this,a new generation signalstructureevaluation system(NGSSES) was proposed.The NGSSESis flexible to configure,and the bandwidth and sampling rate can up to 250MHz and 150MHz,respectively.The output signals have the power of resolution of 0.5dB.The performance ofcode and carrier tracking accuracy of BOC(14,2) under single channel and channel combining tracking methods,multipath of TMBOC(6,1,4/33) under matching and non-matching methods are evaluated using NGSSES.The anti-jammingperformance of BOC(14,2) and AltBOC(15,10),compatibility of BDS B1 BOC(14,2) and GPS L1M BOC(10,5) arealso evaluated using NGSSES.The experimental results verified the feasibility and effectiveness of NGSSES.