Window of portable tent for outdoor cycling sport

The utility model relates to the technical field of outdoor cycling sport and discloses a window of a portable tent for outdoor cycling sport. The window comprises a piece of curtain cloth 1, a window opening 2, waterproof guardrails 3 on the two sides of the window opening and an insect-proof net 4. The insect-proof net 4 is arranged on a quadrangular frame formed by the upper edge of the vertical window opening 2, the bevel edges of the waterproof guardrails 3 on the two sides of the window opening and a line, parallel to the upper edge of the window opening 2, on the horizontal curtain cloth 1. The window is simple in structure and capable of well coordinating the functions of ventilation, rain prevention and insect prevention. When the window is opened, the curtain cloth naturally droops under the effect of gravity, and the insect-proof net and the waterproof guardrails are unfolded accordingly, so that the functions of ventilation and insect prevention are achieved; when it rains, the curtain cloth is tu