The invention discloses a modern streetcar 
fastener system, which comprises a substrate (3). Cylindrical and ellipsoidal combined substrate grooves (301) are formed in the bottom surface of the substrate (3), gas vents are formed between the substrate grooves (301), a contact area between the substrate (3) and concrete is increased, a gauge stop block (11) is arranged on the side, close to a track(12), of the top of the substrate (3), a height adjustment 
cushion block (4) is arranged on the outer side of the gauge stop block (11), and elastic strips (8) are arranged at the tops of the gauge stop block (11) and the height adjustment 
cushion block (4); and the positions, corresponding to the elastic strips (8), of the substrate (3) are provided with elastic strip installation grooves (302),and the position, corresponding to the height adjustment 
cushion block (4), of the substrate (3) is provided with a height adjustment cushion block seat (303). According to the modern streetcar 
fastener system, the more concrete flows into a cavity in the bottom of the substrate, it is ensured that the concrete fully enters the substrate, after construction is completed, the substrate and the lower concrete form a whole, overall 
bearing capacity of the 
fastener system is improved, and loads from vehicles are resisted better.