We take two typical quantumQuantum point obfuscation nonlinearQuantum nonlinear function functionsNonlinear function for example. One is a quantum point functionQuantum point function which is an easy form of quantum nonlinear functionsNonlinear function to implement the functionality of judgement. The other is a quantum power functionQuantum power function which is the component of quantum polynomialQuantum polynomial function functionsPolynomial function. Quantum point obfuscationQuantum point obfuscation is fundamental and practical in quantumQuantum nonlinear function obfuscationObfuscation. It is necessary for us to give rigorous proof and derive the extended property of quantum cryptographyQuantum cryptography by fulfilling elementary primitives in quantum point obfuscationQuantum point obfuscation. In this chapter, to analyze the obfuscatability of quantum point functionsQuantum point function, we introduce the strict definition of a quantum point functionQuantum point function and discuss its variants of multiple points and multiple qubits. Furthermore, we discuss the instantiation procedure of quantum point obfuscationQuantum point obfuscation.