TQB2450 Solution for Injection (TQB2450)+Paclitaxel+Cisplatin ± Anlotinib in the Treatment of Esophageal Cancer.

TQB2450 injection: 1200 mg, i.v.gtt , d1;Anlotinib 10mg, po.qd , d1-14；Paclitaxel 135mg/m2, i.v.gtt , d1; Cisplatin 60-75mg/m2, i.v.gtt , d1-d3; The above schemes are repeated every three weeks. After 4-6 cycles, the regimen is changed to Anlotinib (10mg, po.qd , d1-14)+TQB2450 injection（1200 mg, i.v.gtt , d1）. The regimen is repeated every 3 weeks until the disease progresses.

TQB2450 injection: 1200 mg, i.v.gtt , d1;Paclitaxel 135mg/m2, i.v.gtt , d1; Cisplatin 60-75mg/m2, i.v.gtt , d1-d3; The above schemes are repeated every three weeks. After 4-6 cycles, the regimen is changed to TQB2450 injection（1200 mg, i.v.gtt , d1）. The regimen is repeated every 3 weeks until the disease progresses.