The invention provides a full-plastic 
wheelchair. A semi-frame is formed by connecting an upper cross bar and a lower cross bar which are molded in half, a left straight lever and a right straight lever with 
pipe joints A, B, C and D by a concave dovetail groove, a convex dovetail groove thereon and a plastic nut; a hand wheel is connected with a travel wheel through a connecting rod on the hand wheel and a corresponding connecting column with through holes on the travel wheel, and the hand wheel and the travel wheel are connected with the connecting rod throguh an expansion bolt; a 
brake component is formed by engaging a gear A with a 
handle and a gear B with a rotary 
handle and then arranging the gear A and the gear B on a fixed plate; a folding component is formed by connecting a support bar A and a support B which are provided with two joints; the joints are formed by a joint piece A with a 
flange and a joint piece B with a caulking groove in half; and the support bar A and the support bar B which are molded in half are respectively integrated with the two joints through the plastic nut. In the invention, all the parts are full-plastic parts without a 
metal fastener; the 
wheelchair is particularly suitable for being taken as an accessory for medical inspection, thus greatly reducing the labor intensity of medical personnel, and saving time and labor; and in addition, the sections of the bars are oval, thus the 
wheelchair has great bearable force, less parts, light weight and easy 
assembly and disassembly.