The invention discloses a transparent conducting film, a capacitive touch control sensor and a touch control display device. The transparent conducting film comprises a grid structure; the grid structure comprises a plurality of groove units; a cross structure is formed between the adjacent groove units; a conducting material is filled in each of grooves to form a conducting grid. The transparent conducting film is characterized in that the cross structure is T-shaped. The transparent conducting film disclosed by the invention is simple in structure; the groove depth-width ratio at a grid intersection is increased through the design of the T-shaped structure, so that the conducting material can be fully accommodated into the grid groove. The yield, the stability and the antistatic properties of the process can be greatly improved, and the cost is reduced.