Thank Khouly for your kindness.I can run the simulation now.Another hand,when i run momentum simulation,i met another case:it indicates:Transmission line port can not be inside circuit as port 6,it is modified be internal port.My question is how i can connect the cap and inductor into Co-simulation,if i do not place the port in the circuit?When i generated the layout from the schematics,and directly place the comonent artwork into PCB.How to deal with the groud of schematics in momentum ?