Invisible underpants with an anti-embarrassment crotch structure

A pair of invisible underpants with an anti-embarrassment crotch structure, comprising an underparts body, the underparts body comprising a front panel and a back panel connected together, wherein:

• the front panel has a crotch covering private area of a user, the crotch comprising an inner lining structure located on an inner side of the front panel;
• the inner lining structure comprises a skin-contact layer, a control layer, and a protective layer;
• the skin-contact layer, the control layer, and the protective layer are stacked sequentially on the front panel, forming a crotch gusset structure with an edge thickness varying stepwise;
• wherein the control layer is stacked on a side of the protective layer facing the body and has an area smaller than that of the protective layer, and four edges thereof are inset to form a first step;
• the protective layer has an area smaller than that of the skin-contact layer, and four edges thereof are inset to form a second step;
• the skin-contact layer is stacked on a side of the control layer facing the body and has an area smaller than that of the front panel, and four edges thereof are inset to form a third step;
• an edge of the skin-contact layer is respectively bonded to an edge of the protective layer and the front panel, forming a continuous stepped edge sealing structure;
• the control layer comprises non-stretch mesh fabric or is made from non-stretch mesh fabric;
• the control layer has a thickness in a range from 1.0mm to 2.0mm;
• and
• the protective layer is made of a sandwich-structure material, with a thickness in range from 1.0mm to 5.0mm.