Provided is a needle cover with good manipulability wherein, when a winged needle is drawn into the cover main body, the cover main body is easily expanded, rattling of the wings is minimized, allowing stably fixing the wings. The cover main body (2) has a needle introduction part (3) and a needle protection part (5). An opening (3OP) is formed on the bottom (D) side of the needle introduction part (3), and the needle protection part (5) has a first needle protection part (the top protection part) (5.1) on the top (U) side and a second needle protection part (the bottom protection part) (5.2) on the bottom (D) side. An opening (5OP) is formed between the bottom (D) side of the first needle protection part (5.1) and the top side of the second needle protection part (5.2), and the first needle protection part (5.1) and the second needle protection part (5.2) are connected on the base (PE) side by a needle protection part connection unit (5H) and have a terminal opening (5OPDE) on the terminal (DE) side. On the base (PE) side, a wing-fixing unit (7) is formed on the first side (S1) and the second side (S2) of the second needle protection part (5.2), and an engaging part (7T) of the wing-fixing unit (7) is formed on the terminal (DE) side.Linvention concerne un étui protecteur daiguille pouvant être manipulé aisément et dans lequel, lorsquon fait passer une aiguille papillon dans le corps principal de létui, ledit corps se dilate facilement, et le cliquetis du papillon est minimisé, ce qui permet de fixer ledit papillon de manière stable. Le corps principal (2) de létui comporte une partie dintroduction daiguille (3) et une partie de protection daiguille (5). Un orifice (3OP) est formé sur le côté inférieur (D) de la partie dintroduction daiguille (3), et la partie de protection daiguille (5) comporte une première partie de protection (la partie de protection supérieure) (5.1) sur le côté supérieur (U), et une seconde partie de protection daiguille (la partie de protect
