Protective case for mobile phone and tablet computer

A protective case for a mobile phone and a tablet computer, comprising a main body and a rotatable bottom support located at a lower end of the main body;

• wherein a rear side of the main body is configured to receive the mobile phone or the tablet computer;
• wherein a surface support configured to match with the bottom support is disposed on an upper end of the main body, and a supporting plate is disposed on the surface support;
• wherein an opening is disposed on the main body;
• the bottom support and the surface support pass through the opening;
• the bottom support is rotatable 360 degrees and is connected with the surface support to realize 360-degree rotation of the main body;
• the supporting plate is hinged with the surface support through a telescopic rod of the supporting plate;
• the supporting plate is configured to support the main body;
• the telescopic rod is extendable and retractable and is configured to adjust a distance between the main body and the supporting plate to adjust a placement angle of the main body;
• wherein the bottom support comprises a limiting surface configured to match with the surface support, elastic positioning parts disposed on the bottom support, positioning points, and a plurality of limiting columns;
• the plurality of the limiting columns are uniformly disposed on an upper end of the limiting surface;
• and
• wherein the elastic positioning parts are made of plastic;
• the positioning points are uniformly disposed on the bottom support at an outer side of the elastic positioning parts.